'Piece of cake'--use the InStr() function.
Try these from the debug window:
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Field1 = "The quick brown fox jumped over the lazy dog now is the time for all good men"
Field2 = "Give me liberty or give me death Four-score and seven years ago ask not what your country"
? iif(instr(field1, "four-score and seven years ago")>0, True, False)
False
? iif(instr(field2, "four-score and seven years ago")>0, True, False)
True
? iif(instr(field1, "or give me")>0, True, False)
False
? iif(instr(field2, "or give me")>0, True, False)
True
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Then lookup the InStr() function in the help file.