Perhaps you should try some spelling variations:
rank » ranks, frank
graind » grained, grains, grand, braind, gbraind, gmaind, ggaind
hand » band, hard
sand » stand, band, san
tgained » gained, trained, strained
attained » obtained, retained, trained
drawe » draws, drawn, drake, drawse, rawe
grain » brain, gbrain, gmain, ggain
draw » draws, raw
bsaint » saint
brainy » brain, brains, bbrainy, bmainy, bgainy
rainy » brainy, mainy, gainy
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 (tgained or attained)) or grandtd) or drawe) or (grain or draw)) or ((bsaint or (rainy OR brainy)) 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 (tgained OR attained)) OR grandtd) OR drawe) OR (grain OR draw)) OR ((bsaint OR (rainy OR brainy)) 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 (tgained or attained)) or grandtd) or drawe) or (grain or draw)) or ((bsaint or (rainy OR brainy)) 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 (tgained or attained)) or grandtd) or drawe) or (grain or draw)) or ((bsaint or (rainy OR brainy)) or rain))) counterinsurgency study ;*.