Perhaps you should try some spelling variations:
ranks » banks
bond » bonds
grawt » graw, graft
grawe » grade, grace, graw
rain » gain, rail
brain » bgain, brail
brainy » bgainy, braily, rainy, brains
grantdtd » granted, grantsdtd
rate » rates
grant » grants

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 ((((((grawt OR grawe) or (rain or main)) or (grantdtd or irantdtd)) or rate) or grant) or (brain 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 ((((((grawt OR grawe) OR (rain OR main)) OR (grantdtd OR irantdtd)) OR rate) OR grant) OR (brain 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 ((((((grawt OR grawe) or (rain or main)) or (grantdtd or irantdtd)) or rate) or grant) or (brain 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 ((((((grawt OR grawe) or (rain or main)) or (grantdtd or irantdtd)) or rate) or grant) or (brain or brainy))) counterinsurgency study ;*.