Perhaps you should try some spelling variations:
investment period » investment series, investment policy, adjustment period
investment rates » investment rate
based investment » fixed investment, best investment, bond investment
rent sector » rented sector, rental sector, meat sector
rent based » rest based, agent based, event based

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. rent sector investment rates ) or ( h. rent based investment period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. rent sector investment rates ) OR ( h. rent based investment period )).
• Adding a wildcard symbol may retrieve word variants: (( h. rent sector investment rates ) or ( h. rent based investment period ))*.