Perhaps you should try some spelling variations:
investment trusts » investment targets, investment costs, investment treaty
investment series » investment services, investment barriers, investment treaties
fixed investment » direct investment
kent foreign » net foreign, debt foreign, den foreign
und fixed » und mixed, land fixed, d fixed

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. und fixed investment trusts ) OR ( h. kent foreign investment series ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. und fixed investment trusts ) or ( h. kent foreign investment series ))*.