Search techniques - phrasing, wildcards & boolean operators
To use databases efficiently there are several search techniques you can use to improve the precision of your search results.

Phrase search
Phrase search is one of the most used and most effective search techniques.

Wildcards & truncation
Wildcards are useful for finding variant characters within a word (masking) and for finding words with different endings (truncation).

Boolean logic
Use the boolean operators AND, OR and NOT between keywords to search more precisely for what you want.

Exercise
Broaden or Narrow

Related.