You could have a text box on a form for the user to type in some word fragment, word, or phrase to search for in the meom field. To search through multiple records:

SOME_VALUE = upper(alltrim(ThisForm.NameOfTextBox.Value))
locate for SOME_VALUE $upper(MyTable.MemoFieldName)

You could then display the memo field contents of that record, then use CONTINUE to search for the next record that matches the value.