Perhaps you should try some spelling variations:
rand » brand, hand, rank
irand » ibrand, ihand, irank, brand, iran, irani
igrand » igbrand, ighand, igrank, igrant, ibrand
grand » gbrand, ghand, grank, grant, brand
sand » stand, san, hand
ranks » banks
franks » fbanks, frans
fbanks » banks, flanks
band » bank, bond
grantd » granted, grant
grants » migrants
raind » rain, rainy, rains
grain » rain

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((((rand or sand) or ranks) or (frank or (franks OR fbanks))) or had) or land) or band) or ((((grantd or grants) or (irand or igrand)) or raind) or (grand or (grain or brain)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((rand OR sand) OR ranks) OR (frank OR (franks OR fbanks))) OR had) OR land) OR band) OR ((((grantd OR grants) OR (irand OR igrand)) OR raind) OR (grand OR (grain OR brain)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((((rand or sand) or ranks) or (frank or (franks OR fbanks))) or had) or land) or band) or ((((grantd or grants) or (irand or igrand)) or raind) or (grand or (grain or brain)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((((rand or sand) or ranks) or (frank or (franks OR fbanks))) or had) or land) or band) or ((((grantd or grants) or (irand or igrand)) or raind) or (grand or (grain or brain)))) counterinsurgency study ;*.