Perhaps you should try some spelling variations:
rand » brand, hand, sand
grand » gbrand, ghand, gsand, grant, brand, grantd, graind, irand
rank » ranks, bank
frank » franks, fbank
iranktd » irankstd, ibanktd
band » bank
bond » bonds
graind » grained, grain, grains
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 (rank OR frank)) OR hard) OR (had OR land)) OR (band OR bond)) OR (((((grand OR graind) OR iranktd) OR grawd) OR gran) OR graint)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or (rank OR frank)) or hard) or (had or land)) or (band or bond)) or (((((grand or graind) or iranktd) or grawd) or gran) or graint)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand or (rank OR frank)) or hard) or (had or land)) or (band or bond)) or (((((grand or graind) or iranktd) or grawd) or gran) or graint)) counterinsurgency study ;*.