Perhaps you should try some spelling variations:
investment series » investment services, investment barriers, investment treaties
adjustment period » adjustment policy, adjustment operations
based adjustment » wage adjustment, rate adjustment, related adjustment
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 adjustment period ) or ( h. kent fixed investment series ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kent based adjustment period ) OR ( h. kent fixed investment series )).
• Adding a wildcard symbol may retrieve word variants: (( h. kent based adjustment period ) or ( h. kent fixed investment series ))*.