Perhaps you should try some spelling variations:
sand » stand, san, hand
rank » frank
ranks » franks, banks
grand » grant, brand, grantd, irand, grawd
rained » trained, rainfed, grained
grawd » graw, grad
grawe » grade, grace, graw
gran » grant, iran, graw
grain » brain, rain

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((sand or (rank or bank)) or ranks) or hard) or (had or land)) or ((band OR bond) or bonds)) or ((((grand or rained) or (grawd or grawe)) or gran) or (grain or geraint))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((sand OR (rank OR bank)) OR ranks) OR hard) OR (had OR land)) OR ((band OR bond) OR bonds)) OR ((((grand OR rained) OR (grawd OR grawe)) OR gran) OR (grain OR geraint))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((sand or (rank or bank)) or ranks) or hard) or (had or land)) or ((band OR bond) or bonds)) or ((((grand or rained) or (grawd or grawe)) or gran) or (grain or geraint))) counterinsurgency study ;*".