Perhaps you should try some spelling variations:
investment demand » investor demand
fixed investment » direct investment
based investment » best investment, bond investment, related investment
test based » text based, rest based, trust based
ring fixed » trading fixed, facing fixed, voting fixed
funds » fund

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. test based investment funds ) OR ( h. ring fixed investment demand ))~".
• Adding a wildcard symbol may retrieve word variants: (( h. test based investment funds ) OR ( h. ring fixed investment demand ))*.