Perhaps you should try some spelling variations:
sand » san
hand » had, hard
band » bank
bond » bonds
grayd » gray, grad
gran » iran, graw, gray
grand » irand, grawd, grayd, brand
grant » irant, grawt, grayt, grants
grain » rain
rank » frank, bank
ranks » franks, banks
irant » iran, irani, irans
brant » brandt, brand, brunt

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((sand OR stand) OR (hand OR land)) OR (band OR bond)) OR (((grayd OR grayd) OR (((gran OR grand) OR (grain OR brain)) OR (rank OR ranks))) OR (grant OR (irant OR brant)))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((sand or stand) or (hand or land)) or (band or bond)) or (((grayd or grayd) or (((gran OR grand) or (grain or brain)) or (rank or ranks))) or (grant or (irant or brant)))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((sand or stand) or (hand or land)) or (band or bond)) or (((grayd or grayd) or (((gran OR grand) or (grain or brain)) or (rank or ranks))) or (grant or (irant or brant)))) counterinsurgency study ;*.