Perhaps you should try some spelling variations:
rand » brand, band, hand
grand » gbrand, gband, ghand, grant, brand
sand » stand, band, hand
bond » bonds
grank » grant, frank, rank
hart » heart, part, art
ghart » gheart, gpart, gart, gharo
chart » cheart, cpart, cart, charts

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 san)) OR (bank OR had)) OR land) OR bond) OR ((grank OR grand) OR (guard OR ((hart OR ghart) OR (hadi OR chart))))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or (sand OR san)) or (bank or had)) or land) or bond) or ((grank or grand) or (guard or ((hart or ghart) or (hadi or chart))))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand or (sand OR san)) or (bank or had)) or land) or bond) or ((grank or grand) or (guard or ((hart or ghart) or (hadi or chart))))) counterinsurgency study ;*.