Perhaps you should try some spelling variations:
sand » stand, san
hand » hard
band » bank
bond » bonds
grand » grant, brand, grantd, irand, grawd
grandtd » granttd, brandtd, grantdtd, irandtd, grawdtd
grayd » gray, grad
grawe » grace, graw
grave » grace
gravel » gracel, travel
grade » trade
gran » grant, iran, graw
grayt » grant, gray, graft
graint » geraint, grant, grains, braint, raint
grain » brain, rain

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 hand) or (had or land)) or (band or bond)) or ((((((grand or grayd) or grayd) or grandtd) or ((grawe or (grave OR gravel)) or grade)) or (gran or grayt)) or (graint or grain))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((sand OR hand) OR (had OR land)) OR (band OR bond)) OR ((((((grand OR grayd) OR grayd) OR grandtd) OR ((grawe OR (grave OR gravel)) OR grade)) OR (gran OR grayt)) OR (graint OR grain))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((sand or hand) or (had or land)) or (band or bond)) or ((((((grand or grayd) or grayd) or grandtd) or ((grawe or (grave OR gravel)) or grade)) or (gran or grayt)) or (graint or grain))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((sand or hand) or (had or land)) or (band or bond)) or ((((((grand or grayd) or grayd) or grandtd) or ((grawe or (grave OR gravel)) or grade)) or (gran or grayt)) or (graint or grain))) counterinsurgency study ;*.