Perhaps you should try some spelling variations:
sand » stand, band, san
strained » trained, strain, attained
irand » brand, iran, rand
irande » brande, irane, rande, grande
grand » brand, graind, irand, grawd
graind » grained, grain, grains
graindt » grainedt, graint, grainst
grawe » grade, graw, grave
grace » grade, race
gran » grain, iran, graw
grant » graint, irant, grawt, grants

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((sand or hard) or (had or land)) or (bank or bonds)) or (((((strained or (irand or (grand or graind))) or irantd) or (grawe OR grace)) or gran) or (grant or (graindt or irande)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((sand OR hard) OR (had OR land)) OR (bank OR bonds)) OR (((((strained OR (irand OR (grand OR graind))) OR irantd) OR (grawe OR grace)) OR gran) OR (grant OR (graindt OR irande)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((sand or hard) or (had or land)) or (bank or bonds)) or (((((strained or (irand or (grand or graind))) or irantd) or (grawe OR grace)) or gran) or (grant or (graindt or irande)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((sand or hard) or (had or land)) or (bank or bonds)) or (((((strained or (irand or (grand or graind))) or irantd) or (grawe OR grace)) or gran) or (grant or (graindt or irande)))) counterinsurgency study ;*.