AND
Use AND to narrow a search and retrieve records containing all of the words it separates, e.g. adolescents AND children will only find records containing both these words.
OR
Use OR to broaden a search and retrieve records containing any of the words it separates, e.g.adolescents OR children will find records containing adolescents only, children only, or both words.
NOT
Use NOT to narrow a search and retrieve records that do not contain the term following it, e.g. adolescents NOT children will find records that contain adolescents, but will not contain the word children.
ProQuest assumes your search terms should be combined in a certain order. If you include operators such as AND and OR, we will combine them in this order: NEAR, PRE, AND, OR, NOT.
For instance, a search on education AND elementary NOT secondary would be interpreted as (education AND elementary) NOT secondary. So in this case, (education AND elementary) is considered first.
This search will return results regarding education with information on elementary but not secondary education.You can also use parentheses to control the order in which your search terms get combined, instead of using the standard operator precedence.The use of parentheses and Boolean operators in combination is perfectly acceptable.
There are no stop words within the ProQuest platform. However, the natural language processing used by the search engine will naturally filter out certain “overabundant” words as being irrelevant. While the number of times a term appears within a document does increase its relevance, this only works up to a certain point, at which time its relevance begins to decrease.
* |
The asterisk (*) is the Truncation character, used to replace one or more characters. The truncation character can be used at the end (right-hand truncation), or in the middle of a word. The maximum number of characters that can be replaced is 9. Example: Searching for econom* will find economy, economics, economical, etc. Users can enter a number to define how extensive the truncation should be. Example: econom[*2] will find economy, economic and will replace up to 2 characters Using an asterisk and double quotes together time will not work. Example: You cannot search on "econom*" and should instead remove the quotation marks and search as econom* |
? |
The question mark symbol (?) is the Wildcard character, used to replace any single character, either inside or at the right end of the word. Example: Searching for t?re will find tire, tyre, tore, etc. |
- |
Use a hyphen to indicate a range when searching numerical fields, such as Publication date. Example: YR(2005-2008) |
< or > |
Use the less than or greater than symbols to indicate before/after or smaller/larger or less/more when searching numerical fields, such as the Publication date. Example: YR(>2008) will located documents published after 2008 |
*Note: When using the asterisk (*) or wildcard (?) in your search, any terms retrieved using either or thesese are not considered when sorting your results based on relevance. This is because there is no way for ProQuest to assess the relevance of these terms to your research as the term itself is not exact. For example, your search on 'bio*' could return occurrences of any of all of these terms: 'bionic' or 'biosynthesis' or 'biodegrade' or 'biographic.' One, some, all, or none could be relevant to your search.
Proximity and adjacency operators are used to broaden and narrow your search.
NEAR/# OR n/# |
Finds documents where these words are within some number of words of each other (either before or after). Example: computer NEAR/3 careers |
PRE/# OR p/# |
Finds documents where these words are within some number of words of each other in the specified order. Example: business management PRE/5 education |
EXACT OR .e |
Used primarily for searching specific fields, like Subject, EXACT looks for your exact search term in its entirety, rather than as part of a larger term. Example: Type EXACT(“higher education”) in the Subject field |