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