Perhaps you should try some spelling variations:
rand » brand, band, hand
grand » gbrand, gband, ghand, grant, brand, grantd, graind, irand
graind » grained, grain, grains
rank » ranks, frank, bank
banks » bank
graintd » grained, geraintd, grantd, graind
gsand » sand
grawd » graw, grad, grawe
gran » grant, grain, iran
graint » geraint, grant, grain

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((rand OR (grand OR graind)) OR (rank OR banks)) OR hard) OR (had OR land)) OR (bond OR bonds)) OR (((((graintd OR gsand) OR gbanktd) OR (grawd OR raw)) OR gran) OR graint)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((rand or (grand OR graind)) or (rank or banks)) or hard) or (had or land)) or (bond or bonds)) or (((((graintd or gsand) or gbanktd) or (grawd or raw)) or gran) or graint)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((((rand or (grand OR graind)) or (rank or banks)) or hard) or (had or land)) or (bond or bonds)) or (((((graintd or gsand) or gbanktd) or (grawd or raw)) or gran) or graint)) counterinsurgency study ;*.