Perhaps you should try some spelling variations:
grand » grant, brand, grantd, irand, grawd
granttd » granted, grantttd, iranttd, grawttd
grad » grade, grid, graw
gran » grant, iran, graw
grain » brain, gbrain, gmain, ggain
graind » braind, grained, grains, gbraind, gmaind, ggaind
irand » brand, iran, rand
ggaind » gaind, againd
ggain » gain, again
rain » brain, main, gain
irant » grant, iran, brant
irani » iran, iraqi, rani

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((grand or (hard or had)) or (bank or land)) or ((((granttd or grad) or (gran or grain)) or (irand or ((graind OR ggaind) or (ggain or rain)))) or ((irant or irani) or raw))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((grand OR (hard OR had)) OR (bank OR land)) OR ((((granttd OR grad) OR (gran OR grain)) OR (irand OR ((graind OR ggaind) OR (ggain OR rain)))) OR ((irant OR irani) OR raw))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((grand or (hard or had)) or (bank or land)) or ((((granttd or grad) or (gran or grain)) or (irand or ((graind OR ggaind) or (ggain or rain)))) or ((irant or irani) or raw))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((grand or (hard or had)) or (bank or land)) or ((((granttd or grad) or (gran or grain)) or (irand or ((graind OR ggaind) or (ggain or rain)))) or ((irant or irani) or raw))) counterinsurgency study ;*.