Perhaps you should try some spelling variations:
rank » ranks, frank
graind » grained, grain, grains, gmaind, ggaind, graild
hand » band, hard
granttd » granted, grantttd, grainttd, grandttd
drawe » draws, drake, grawe, drawse, rawe
drawn » draws, drawsn, rawn
gran » grant, grain, grand
graw » grow, raw, grew
draw » draws, raw
railt » rail, rails
trained » tmained, tgained, trailed
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 graind) or hand) or (had or land)) or (bank or bonds)) or (((((san or trained) or granttd) or (drawe or drawn)) or (gran or (graw OR draw))) or ((brain or railt) 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 (((((san OR trained) OR granttd) OR (drawe OR drawn)) OR (gran OR (graw OR draw))) OR ((brain OR railt) 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 (((((san or trained) or granttd) or (drawe or drawn)) or (gran or (graw OR draw))) or ((brain or railt) 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 (((((san or trained) or granttd) or (drawe or drawn)) or (gran or (graw OR draw))) or ((brain or railt) or rain))) counterinsurgency study ;*.