Perhaps you should try some spelling variations:
sector investments » sector investment
investments rates » investment rates, investment rate, reinvestment rates
fixed payment » fare payment
rent sector » meat sector, heat sector, garment sector
fee payment » fare payment, e payment, new payment
sunk » sun

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: (( h. rent sector investments rates ) OR ( h. sunk ((fixed payment) OR (fee payment)) series ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. rent sector investments rates ) or ( h. sunk ((fixed payment) OR (fee payment)) series ))~".
• Adding a wildcard symbol may retrieve word variants: (( h. rent sector investments rates ) or ( h. sunk ((fixed payment) OR (fee payment)) series ))*.