Perhaps you should try some spelling variations:
sand » stand, san, hand
band » bank, bond
grand » grant, brand
hear » heard, shear, year
heart » heardt, sheart, yeart
sheardt » shearddt, ssheardt, syeardt
shearddt » sheardddt, sshearddt, syearddt
yeard » years, year, heard
heat » head
heath » headh, health, death
hari » hard, hadi, harm
grants » migrants

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((bonds or (air or had)) or (sand or (band or grand))) or land) or ((((gharttt or (hear or yeard)) or heat) or (((cargo or (heart or hari)) or (((sheardt OR shearddt) or heath) or bharti)) or harmdm)) or grants)) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((bonds OR (air OR had)) OR (sand OR (band OR grand))) OR land) OR ((((gharttt OR (hear OR yeard)) OR heat) OR (((cargo OR (heart OR hari)) OR (((sheardt OR shearddt) OR heath) OR bharti)) OR harmdm)) OR grants)) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bonds or (air or had)) or (sand or (band or grand))) or land) or ((((gharttt or (hear or yeard)) or heat) or (((cargo or (heart or hari)) or (((sheardt OR shearddt) or heath) or bharti)) or harmdm)) or grants)) counterinsurgency study ;*".