Perhaps you should try some spelling variations:
rand » brand, band, hand
grand » gbrand, gband, ghand, brand, irand, grawd, trand
irand » ibrand, iband, ihand, brand, iran, irani
sand » stand, band, san
grayd » grad, rayd, grawd
gran » iran, graw, tran
grant » irant, grawt, trant, grants
gray » ray, graw
strained » trained, strain, strand, stbrained, stmained, stgained
attained » obtained, retained, trained
grain » brain, gbrain, gmain, ggain
ggaind » gaind, againd
ggain » gain, again
rain » brain, main, gain
graft » draft, craft, kraft

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