Perhaps you should try some spelling variations:
rank » ranks, frank
irand » brand, iran, grand
hand » band, hard
sand » stand, band, san
tgained » gained, trained, attained
granttd » granted, grantttd, grainttd, grandttd
draw » draws, raw
gran » grant, grain, grand
graw » grow, raw, grew
raint » saint, rainy, paint, maint, gaint, railt
rains » grains, trains, drains, mains, gains, rails
brain » bmain, bgain, brail
rain » main, gain, rail

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