Perhaps you should try some spelling variations:
rand » brand, sand
grand » gbrand, gsand, grantd, graind, irand, grant, brand
irand » ibrand, isand, brand, iran, irans
rank » frank
ranks » franks, banks
hand » hard
gran » grant, grain, iran
gbandk » gbondk
band » bond
grad » grid, graw, gray
grade » gride, grawe, graye, trade
graints » grants, grains, gradients
irani » iran, iraqi, rani

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 (rank OR ranks)) OR (hand OR had)) OR (bank OR land)) OR (((gbandk OR (gran OR brain)) OR (band OR ((grand OR irand) OR ((grad OR grade) OR grow)))) OR (graints OR irani))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (rank or ranks)) or (hand or had)) or (bank or land)) or (((gbandk or (gran or brain)) or (band or ((grand or irand) or ((grad OR grade) or grow)))) or (graints or irani))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((rand or (rank or ranks)) or (hand or had)) or (bank or land)) or (((gbandk or (gran or brain)) or (band or ((grand or irand) or ((grad OR grade) or grow)))) or (graints or irani))) counterinsurgency study ;*.