Perhaps you should try some spelling variations:
rand » brand, grand, band
bond » bonds
grad » grade, grand, grid
gradient » gradeient, grandient, gridient
grant » grants
granttd » grantstd
granted » grantsed
grain » brain, rain
graint » braint, raint, geraint, grains
gray » ray, graw

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((rand or hard) or (had or land)) or (bank or bond)) or ((((((grad or grant) or grain) or (granttd OR granted)) or ((garowe or grown) or grow)) or gray) or (graint or gradient))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR hard) OR (had OR land)) OR (bank OR bond)) OR ((((((grad OR grant) OR grain) OR (granttd OR granted)) OR ((garowe OR grown) OR grow)) OR gray) OR (graint OR gradient))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or hard) or (had or land)) or (bank or bond)) or ((((((grad or grant) or grain) or (granttd OR granted)) or ((garowe or grown) or grow)) or gray) or (graint or gradient))) counterinsurgency study ;*".