F.1:4.4.3 - Try question-preserving variants and repair a blind spot

Form variants from the concern: the object being worked on, needed action or result, failure, and condition that changes the answer. Start with the parts likely to occur in the available text. Trying every detail as one phrase can miss a passage that explains the needed relation in different words.

Keep the original question alongside each consequential variant. Terms suggested by a colleague, an assistant or a promising source remain search hypotheses until their local use is inspected. If a variant drops a constraint to broaden discovery, restore that constraint while reading candidates. Broadening the query permits finding more material; it does not broaden what would answer the question.

After an unhelpful result, ask what that route could have missed. Change the particular term, scope or access path responsible for the suspected omission. When no available route can inspect a load-bearing original, return that access gap rather than inventing its content. Add another route for a reason, not to satisfy a fixed number of searches.