Perhaps you should try some spelling variations:
investment period » investment series, investment policy, adjustment period
based investment » best investment, bond investment, related investment
fixed investment » direct investment
investment rate » investment climate
rent based » rest based, agent based, event based
ring fixed » trading fixed, facing fixed, voting fixed

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 based investment rate ) or ( h. ring fixed investment period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. rent based investment rate ) OR ( h. ring fixed investment period ))*.