Perhaps you should try some spelling variations:
grand » brand, irand, grawd, trand
ranks » banks
band » bank, bond
grant » grants, irant, grawt, trant
grantdtd » grantsdtd, granted, irantdtd, grawtdtd, trantdtd
rain » brain, main, gain
grain » gbrain, gmain, ggain, brain
grawe » grade, grace, graw
gran » iran, graw, tran
gray » ray, graw

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((grand or ranks) or (hand OR hard)) or (had or land)) or (band or bonds)) or (((((grant or rain) or grantdtd) or grawe) or (gran or gray)) or (gmaint or grain))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((grand OR ranks) OR (hand OR hard)) OR (had OR land)) OR (band OR bonds)) OR (((((grant OR rain) OR grantdtd) OR grawe) OR (gran OR gray)) OR (gmaint OR grain))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((grand or ranks) or (hand OR hard)) or (had or land)) or (band or bonds)) or (((((grant or rain) or grantdtd) or grawe) or (gran or gray)) or (gmaint or grain))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((grand or ranks) or (hand OR hard)) or (had or land)) or (band or bonds)) or (((((grant or rain) or grantdtd) or grawe) or (gran or gray)) or (gmaint or grain))) counterinsurgency study ;*.