Perhaps you should try some spelling variations:
investment series » investment services, investment barriers, investment treaties
based investment » fixed investment, best investment, bond investment
investment costs » investment funds, investment flows, investment banks
net investment » debt investment, _ investment, direct investment
kent based » agent based, test based

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. kent based investment series ) OR ( h. kent net investment costs ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. kent based investment series ) or ( h. kent net investment costs ))*.