Perhaps you should try some spelling variations:
grand » grant, brand, grantd, graind, irand
hand » band, hard
grantttd » granted, granttttd, graintttd, irantttd
grad » grade, gray, gram
graw » grow, draw, grew
gran » grant, grain, iran
irand » brand, iran, rand
ggain » gain, grain, again
rain » brain, gain, rail
brant » brandt, grant, brand
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 (hand or had)) or (bank or land)) or ((((grantttd or ((grad OR graw) or grid)) or gran) or (irand or (ggain or (ggain or (rain or main))))) or ((brant or irani) or raw))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((grand OR (hand OR had)) OR (bank OR land)) OR ((((grantttd OR ((grad OR graw) OR grid)) OR gran) OR (irand OR (ggain OR (ggain OR (rain OR main))))) OR ((brant OR irani) OR raw))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((grand or (hand or had)) or (bank or land)) or ((((grantttd or ((grad OR graw) or grid)) or gran) or (irand or (ggain or (ggain or (rain or main))))) or ((brant or irani) or raw))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((grand or (hand or had)) or (bank or land)) or ((((grantttd or ((grad OR graw) or grid)) or gran) or (irand or (ggain or (ggain or (rain or main))))) or ((brant or irani) or raw))) counterinsurgency study ;*.