Perhaps you should try some spelling variations:
sand » stand, band, san
gravint » gradient
iravi » ravi, iraqi, irani
rai » rail, rain, ravi
gain » gains, main
rank » frank, bank
ranks » franks, banks
hand » band, hard
bond » bonds
frans » frank, franz, trans
grant » grants

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: (((((((sand OR (((iron OR (grow OR raw)) OR gravint) OR (iron OR (iravi OR (rai OR gain))))) OR had) OR (rank OR ranks)) OR hand) OR land) OR bond) OR (frans OR (iran OR grant))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((((sand or (((iron or (grow or raw)) or gravint) or (iron or (iravi or (rai or gain))))) or had) or (rank OR ranks)) or hand) or land) or bond) or (frans or (iran or grant))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((((sand or (((iron or (grow or raw)) or gravint) or (iron or (iravi or (rai or gain))))) or had) or (rank OR ranks)) or hand) or land) or bond) or (frans or (iran or grant))) counterinsurgency study ;*.