Perhaps you should try some spelling variations:
investment period » investment policy, adjustment period, investment operations
investment series » investment services, investment barriers, investment treaties
fixed investment » direct investment
based investment » best investment, bond investment, related investment
kent based » agent based, event based, text 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. agent fixed investment series ) OR ( h. kent based investment period ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. agent fixed investment series ) OR ( h. kent based investment period ))".
• Adding a wildcard symbol may retrieve word variants: (( h. agent fixed investment series ) OR ( h. kent based investment period ))*.