Perhaps you should try some spelling variations:
sand » stand, band, hand
ranks » banks
frans » franz, trans, fran
grants » migrants
rand » brand, grand, band
irand » ibrand, igrand, iband, brand, iran, grand
migrates » migrate, migrated, migrants
ggain » again, ggains
gain » gains
grain » grail
rain » rail
brain » brail

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((((sand or san) or (rank or ranks)) or (frank or frans)) or had) or land) or bank) or ((((grants or rand) or (irand or migrates)) or (ggain or gain)) or ((grain OR rain) or (main or brain)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((sand OR san) OR (rank OR ranks)) OR (frank OR frans)) OR had) OR land) OR bank) OR ((((grants OR rand) OR (irand OR migrates)) OR (ggain OR gain)) OR ((grain OR rain) OR (main OR brain)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((((sand or san) or (rank or ranks)) or (frank or frans)) or had) or land) or bank) or ((((grants or rand) or (irand or migrates)) or (ggain or gain)) or ((grain OR rain) or (main or brain)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((((sand or san) or (rank or ranks)) or (frank or frans)) or had) or land) or bank) or ((((grants or rand) or (irand or migrates)) or (ggain or gain)) or ((grain OR rain) or (main or brain)))) counterinsurgency study ;*.