Perhaps you should try some spelling variations:
graind » grained, grains, braind, gbraind, gmaind, ggaind
brains » brain, grains, trains, bbrains, bmains, bgains
grantd » grants, grant, granttd, irantd, grawtd
gsand » sand
rank » ranks
frank » franks
granted » grantted, iranted, grawted
gran » grant, iran, graw
grand » grantd, irand, grawd, grant, brand
grain » brain, gbrain, gmain, ggain
ggain » gain
again » gain
rain » brain, main, gain

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((((graind or brains) or ((grantd or granted) or gsand)) or had) or (rank or frank)) or san) or land) or bank) or (trans or ((((gran OR grand) or grain) or raw) or ((ggain or again) or rain)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((((graind OR brains) OR ((grantd OR granted) OR gsand)) OR had) OR (rank OR frank)) OR san) OR land) OR bank) OR (trans OR ((((gran OR grand) OR grain) OR raw) OR ((ggain OR again) OR rain)))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((graind or brains) or ((grantd or granted) or gsand)) or had) or (rank or frank)) or san) or land) or bank) or (trans or ((((gran OR grand) or grain) or raw) or ((ggain or again) or rain)))) counterinsurgency study ;*".