Perhaps you should try some spelling variations:
grad » grade, grid, graw
band » bank, bond
grande » grade, grante, brande
grand » grant, brand
grantd » granted, grants, grant
grantdtd » grantedtd, grantstd, granttd, granted
ggainted » gained, granted, painted
grain » brain, gbrain, gmain, ggain
gbrain » brain, gbbrain, gbmain, gbgain
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: (((((ggaint or grad) or hard) or (had or land)) or (band or bonds)) or ((((((grad or ((grande OR grand) or grantd)) or frank) or ((grantdtd or irantddtd) or ggainted)) or raw) or grain) or (gbrain or rain))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((ggaint OR grad) OR hard) OR (had OR land)) OR (band OR bonds)) OR ((((((grad OR ((grande OR grand) OR grantd)) OR frank) OR ((grantdtd OR irantddtd) OR ggainted)) OR raw) OR grain) OR (gbrain OR rain))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((ggaint or grad) or hard) or (had or land)) or (band or bonds)) or ((((((grad or ((grande OR grand) or grantd)) or frank) or ((grantdtd or irantddtd) or ggainted)) or raw) or grain) or (gbrain or rain))) counterinsurgency study ;*".