Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, grant, brand, grantd, irand, grawd
ranks » banks
band » bank
bond » bonds
graind » grained, grains, braind, raind
grad » grade, grid, graw
gran » grant, iran, graw
grain » brain, rain
graint » braint, raint, geraint, grant, grains

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 ranks) OR hard) OR (had OR land)) OR (band OR bond)) OR ((((((grand OR ghana) OR graind) OR ibanktd) OR grad) OR (gran OR grain)) OR graint)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or ranks) or hard) or (had or land)) or (band or bond)) or ((((((grand or ghana) or graind) or ibanktd) or grad) or (gran OR grain)) or graint)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand or ranks) or hard) or (had or land)) or (band or bond)) or ((((((grand or ghana) or graind) or ibanktd) or grad) or (gran OR grain)) or graint)) counterinsurgency study ;*.