Perhaps you should try some spelling variations:
rand » brand, sand, rank
grand » gbrand, gsand, grank, grant, brand, grantd, graind, irand
grandtd » gbrandtd, gsandtd, granktd, granttd, brandtd, grantdtd, graindtd, irandtd
grade » trade
gran » grant, grain, iran
brain » bmain, bgain
rain » main, gain
trail » trails, train, trait
mail » main

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 ((hand OR hard) OR (band OR bank))) OR (had OR land)) OR (bond OR bonds)) OR ((((grand OR grandtd) OR grade) OR (gran OR raw)) OR ((brain OR rain) OR (trail OR (rail OR mail))))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or ((hand OR hard) or (band or bank))) or (had or land)) or (bond or bonds)) or ((((grand or grandtd) or grade) or (gran or raw)) or ((brain or rain) or (trail or (rail or mail))))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((rand or ((hand OR hard) or (band or bank))) or (had or land)) or (bond or bonds)) or ((((grand or grandtd) or grade) or (gran or raw)) or ((brain or rain) or (trail or (rail or mail))))) counterinsurgency study ;*.