Perhaps you should try some spelling variations:
investments barriers » investment barriers, investment barrier, investments careers
foreign investments » foreign investment, foreign investors
investments choices » investment choices, investment choice, investments chinese
yield investments » fixed investments, direct investments, liquid investments
testing yield » testing field
den foreign » des foreign, does foreign, when foreign

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. den foreign investments choices ) OR ( h. testing yield investments barriers ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. den foreign investments choices ) or ( h. testing yield investments barriers ))*.