Perhaps you should try some spelling variations:
rand » brand, sand, rank
grand » gbrand, gsand, grank, brand
irand » ibrand, isand, irank, brand, iran, irani
hand » hard
band » bond
grayd » rayd
gray » ray
grad » grade, grid, gram
grant » grants
irank » frank, iran, rank
graind » grained, grains, braind, gbraind, gmaind, ggaind
ggain » gain, again
grain » brain, gbrain, gmain, ggain
rain » brain, main, gain
brant » brandt, brand, brunt
graw » grow, raw, draw

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 ((hand or band) or had)) or (bank or land)) or ((((grand or ((grayd or gray) or grad)) or grant) or ((irand OR irank) or (graind or ((ggain or grain) or rain)))) or (brant or graw))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((rand OR ((hand OR band) OR had)) OR (bank OR land)) OR ((((grand OR ((grayd OR gray) OR grad)) OR grant) OR ((irand OR irank) OR (graind OR ((ggain OR grain) OR rain)))) OR (brant OR graw))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rand or ((hand or band) or had)) or (bank or land)) or ((((grand or ((grayd or gray) or grad)) or grant) or ((irand OR irank) or (graind or ((ggain or grain) or rain)))) or (brant or graw))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((rand or ((hand or band) or had)) or (bank or land)) or ((((grand or ((grayd or gray) or grad)) or grant) or ((irand OR irank) or (graind or ((ggain or grain) or rain)))) or (brant or graw))) counterinsurgency study ;*.