Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
based investment » best investment, bond investment, related investment
fixed investment » direct investment
kent based » agent based, event based, text based
kent fixed » net 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. kent based investment barriers ) or ( h. kent fixed investment treaties ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kent based investment barriers ) OR ( h. kent fixed investment treaties )).
• Adding a wildcard symbol may retrieve word variants: (( h. kent based investment barriers ) or ( h. kent fixed investment treaties ))*.