Perhaps you should try some spelling variations:
rank » ranks, frank
hand » hard
grand » grant, brand, grantd, irand, grawd
grawd » graw, grad, grawe
gray » ray, graw
trandtd » stranded
rate » rates
gran » grant, iran, graw
rain » brain, main, gain
grain » gbrain, gmain, ggain, brain

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

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