Perhaps you should try some spelling variations:
rank » ranks, frank, bank
sand » stand
hand » hard
band » bank, bond
gmains » gains, grains, mains
rain » gain, rail
brains » bgains, brails, grains, trains, drains
brain » bgain, brail
granttd » granted, grantstd
grawe » grade, grace, graw
grant » grants
draw » draws, raw
bgains » gains, bargains

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 sand) or hand) or (had or land)) or (band or bonds)) or (((((san or (gmains or rain)) or granttd) or grawe) or ((grant or san) or draw)) or (((bgains OR brains) or brain) or main))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((rank OR sand) OR hand) OR (had OR land)) OR (band OR bonds)) OR (((((san OR (gmains OR rain)) OR granttd) OR grawe) OR ((grant OR san) OR draw)) OR (((bgains OR brains) OR brain) OR main))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rank or sand) or hand) or (had or land)) or (band or bonds)) or (((((san or (gmains or rain)) or granttd) or grawe) or ((grant or san) or draw)) or (((bgains OR brains) or brain) or main))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((rank or sand) or hand) or (had or land)) or (band or bonds)) or (((((san or (gmains or rain)) or granttd) or grawe) or ((grant or san) or draw)) or (((bgains OR brains) or brain) or main))) counterinsurgency study ;*.