Perhaps you should try some spelling variations:
rank » frank
ranks » franks, banks
irand » brand, iran, rand
sand » stand, band, san
granttd » granted
drawe » draws, draw, drawn
grand » grant, brand
graw » grow, raw, draw
brail » brazil, brasil, rail
braint » brain, brains, brant, bbraint, bgaint, brailt
trained » tbrained, tgained, trailed
rain » brain, 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 ranks) or irand) or hard) or (had or land)) or (bank or bonds)) or (((((sand or trained) or granttd) or drawe) or (grand or graw)) or ((brail or braint) or (rain or main)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((rank OR ranks) OR irand) OR hard) OR (had OR land)) OR (bank OR bonds)) OR (((((sand OR trained) OR granttd) OR drawe) OR (grand OR graw)) OR ((brail OR braint) OR (rain OR main)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((rank OR ranks) or irand) or hard) or (had or land)) or (bank or bonds)) or (((((sand or trained) or granttd) or drawe) or (grand or graw)) or ((brail or braint) or (rain or main)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((((rank OR ranks) or irand) or hard) or (had or land)) or (bank or bonds)) or (((((sand or trained) or granttd) or drawe) or (grand or graw)) or ((brail or braint) or (rain or main)))) counterinsurgency study ;*.