Break down your thesis into concepts. Develop a list of synonyms.

EXAMPLE: curriculum AND development AND middle school

Use the truncation or wildcard symbol (*) to search variant word endings: develop* = develop, develops, developer, developing, developed

Clearly define your thesis statement. Trouble spots to look out for:

Too Broad - EXAMPLE: text books

• Solution: add another concept to your topic which will narrow your thesis and make it more focused.
  EXAMPLE: text books AND mathematics

Too Narrow - EXAMPLE: homeschooling AND socialization AND "family income"

[NOTE: to search a phrase use quotes]

• Solution: Remove one secondary concept from your thesis.
  EXAMPLE: homeschooling AND socialization AND "family income"