Skip to Main Content


The research skills tutorial

Doctor with a stethoscope

The Info Doctor Is In


 Tip: Use the Boolean operator OR between concepts to expand your search.Symptoms: 

  • Search in the library catalog on "asian carp in chicago ship channel" results in no hits. 
  • Searcher experiences discouragement and doubt about topic.


  • Search strategy is TOO NARROW.

Expand search using:

  • a broader geographic area such as Great Lakes, Midwest, Lake Michigan
  • equivalent words or phrases such as invasive species, introduced fishes
  • more general terminology such as environmental threats
  • fewer key concepts such as "invasive species great lakes"

Photo source: Microsoft