Perhaps you should try some spelling variations:
rand » brand, hand
grand » gbrand, ghand, grantd, irand, grawd, grant, brand
rank » ranks, frank
gffranks » gffrankss, gfffranks
sand » stand, san, hand
band » bond
graind » grained, grains, braind, gbraind, gmaind, ggaind
strained » trained, strain, attained, stbrained, stmained, stgained
stbrained » trained, stained, stbbrained, stbmained, stbgained
grain » brain, gbrain, gmain, ggain
ggain » gain, again
rain » brain, main, gain
gran » grant, iran, graw
ghad » ghada, chad, grad

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 rank) or (sand or had)) or ((band or bank) or land)) or (((((graind or (strained or stbrained)) or gmaind) or ((grain OR ggain) or rain)) or (gffranks or (gran or grand))) or ((ghad or cham) or ghana))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR rank) OR (sand OR had)) OR ((band OR bank) OR land)) OR (((((graind OR (strained OR stbrained)) OR gmaind) OR ((grain OR ggain) OR rain)) OR (gffranks OR (gran OR grand))) OR ((ghad OR cham) OR ghana))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or rank) or (sand or had)) or ((band or bank) or land)) or (((((graind or (strained or stbrained)) or gmaind) or ((grain OR ggain) or rain)) or (gffranks or (gran or grand))) or ((ghad or cham) or ghana))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((rand or rank) or (sand or had)) or ((band or bank) or land)) or (((((graind or (strained or stbrained)) or gmaind) or ((grain OR ggain) or rain)) or (gffranks or (gran or grand))) or ((ghad or cham) or ghana))) counterinsurgency study ;*.