Perhaps you should try some spelling variations:
rand » brand, band, hand
grand » gbrand, gband, ghand, grantd, graind, irand, grant, brand
irand » ibrand, iband, ihand, brand, iran, irani
sand » stand, band, san
graink » grain, grains
rank » ranks
frank » franks
grantsk » migrantsk, granttsk, graintsk, irantsk
grants » migrants, grantts, graints, irants
gran » grant, grain, iran

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 (sand OR (hard OR had))) OR (bank OR land)) OR ((((((graink OR rank) OR (grantsk OR (ghandt OR grants))) OR ((gran OR grand) OR brain)) OR frank) OR irand) OR ghana)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rand or (sand or (hard or had))) or (bank or land)) or ((((((graink or rank) or (grantsk or (ghandt or grants))) or ((gran OR grand) or brain)) or frank) or irand) or ghana)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((rand or (sand or (hard or had))) or (bank or land)) or ((((((graink or rank) or (grantsk or (ghandt or grants))) or ((gran OR grand) or brain)) or frank) or irand) or ghana)) counterinsurgency study ;*.