When searching multiple words the system will automatically supply the Boolean "and" operator between each word; multiple words entered for the search will all occur somewhere in the retrieved records though not necessarily in the order entered. Both examples on the right will retrieve the same results.
world health organization
world and health and organization
Search for complete phrases by enclosing them in quotation marks. Words enclosed in double quotes will appear together in all results exactly as typed.
"world health organization"
The asterisk ('*') matches up to five non-space characters, starting at the specified position in the word. For example, "inter*" will match "internal" and "internet", but will not match "international". The '*' wildcard may only appear after at least two characters.
The '*' wildcard may also be embedded in a search string. For example, "colo*r" would match both "color" and "colour".
Matches any number of non-space characters, starting at the specified position in the word. For example, "inter**" will match all words that begin with "inter" (e.g., "internal", "internet", "international", etc.).
The '*' wildcard may also be embedded in a search string.
You may use a question mark ('?') to replace a single character anywhere within a word.
Boolean Operators and Field Limits
Use AND or OR to specify multiple words in any field, any order. Use AND NOT to exclude words. Select the operator you wish to use from the selection list.
stocks [and] bonds
stocks [or] bonds
stocks [and not] bonds
The NEAR operator is used to retrieve records that contain the specified words or phrases within ten words of each other in the same indexed field.
The WITHIN operator is similar to the NEAR operator, but allows the user to specify the maximum number of words that may appear between the specified words. WITHIN 10 and NEAR are equivalent.
international near conference
fractal within 3 geometry
Field limits may be specified by selecting a field limit from the selection list in the form before the word or phrase to be searched. A field limit causes the system to search only the specified field for the specified word(s). The following field limits are supported: