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