and narrows: stimulus and response: retrieves only those records in which both terms occur.
or broadens: language or speech: retrieves articles containing either term
not: bears not football: excludes sources containing the second term; use with extreme caution
* truncates: evol* retrieves evolution, evolutionary. etc.; ! in Nexis Uni
Further search tips in Nexis Uni:
Proximity: money w/7 launder! Searches money within seven words of launder(or laundered or laundering).
Segment searching: Byline(haberman) and kavanaugh
Other segments: company, headline, hlead, length, publication, publication-type, section, term, ticker, title