Perhaps you should try some spelling variations:
rank » ranks, frank
graind » grained, grain, grains, gbraind, gmaind, ggaind
hand » band, hard
sand » stand, band, san
drawe » draws, draw, drawn
granttd » grantttd, grainttd, grandttd
granted » grantted, grainted, grandted
gran » grant, grain, grand
graw » grow, raw, draw
bgain » gain, brain, again
raint » saint, rainy, rains, braint, maint, gaint
trained » tbrained, tmained, tgained
rain » brain, main, gain

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 graind) or hand) or (had or land)) or (bank or bonds)) or (((((sand or trained) or (granttd OR granted)) or drawe) or (gran or graw)) or ((bgain or raint) or rain))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((rank OR graind) OR hand) OR (had OR land)) OR (bank OR bonds)) OR (((((sand OR trained) OR (granttd OR granted)) OR drawe) OR (gran OR graw)) OR ((bgain OR raint) OR rain))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rank or graind) or hand) or (had or land)) or (bank or bonds)) or (((((sand or trained) or (granttd OR granted)) or drawe) or (gran or graw)) or ((bgain or raint) or rain))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((rank or graind) or hand) or (had or land)) or (bank or bonds)) or (((((sand or trained) or (granttd OR granted)) or drawe) or (gran or graw)) or ((bgain or raint) or rain))) counterinsurgency study ;*.