Perhaps you should try some spelling variations:
rand » brand, sand, rank
grand » gbrand, gsand, grank, brand, graind, irand, trand
trand » tbrand, tsand, trank, strand, trend, brand
hand » hard
band » bank
bond » bonds
grank » frank, rank, graink, irank, trank
grained » gained, trained, strained
graw » grow, raw, draw
gran » grain, iran, tran
grant » graint, irant, trant, grants
graint » geraint, grain, grains

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: (((((rand OR grand) OR hand) OR (had OR land)) OR (band OR bond)) OR ((((((grank OR trand) OR grained) OR irantdtd) OR graw) OR ((gran OR (gray OR ray)) OR grant)) OR graint)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand OR grand) or hand) or (had or land)) or (band or bond)) or ((((((grank or trand) or grained) or irantdtd) or graw) or ((gran or (gray or ray)) or grant)) or graint)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand OR grand) or hand) or (had or land)) or (band or bond)) or ((((((grank or trand) or grained) or irantdtd) or graw) or ((gran or (gray or ray)) or grant)) or graint)) counterinsurgency study ;*.