Perhaps you should try some spelling variations:
ranks » banks
grawt » graw, graft, grawe
grant » grants, grandt, irant, grawt
grantdtd » grantsdtd, granted, grandtdtd, irantdtd, grawtdtd
rain » brain, main, gain
grain » gbrain, gmain, ggain, brain
brainy » bbrainy, bmainy, bgainy, brain, rainy, brains
race » rate, face, pace
rice » price, rise, rich
gran » grand, iran, graw

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((hard or ranks) or band) or (had or land)) or (bank or (bond or bonds))) or ((((((grawt OR grant) or rain) or (grantdtd or irantdtd)) or (race or rice)) or gran) or (grain or brainy))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((hard OR ranks) OR band) OR (had OR land)) OR (bank OR (bond OR bonds))) OR ((((((grawt OR grant) OR rain) OR (grantdtd OR irantdtd)) OR (race OR rice)) OR gran) OR (grain OR brainy))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((hard or ranks) or band) or (had or land)) or (bank or (bond or bonds))) or ((((((grawt OR grant) or rain) or (grantdtd or irantdtd)) or (race or rice)) or gran) or (grain or brainy))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((hard or ranks) or band) or (had or land)) or (bank or (bond or bonds))) or ((((((grawt OR grant) or rain) or (grantdtd or irantdtd)) or (race or rice)) or gran) or (grain or brainy))) counterinsurgency study ;*.