Perhaps you should try some spelling variations:
"h. direct foreign investment services" » "h. direct foreign government services", "h. direct foreign treatment services", "h. direct foreign investment choices"
"h. test private investment treaties" » "h. test private investment strategies", "h. test private investment activities", "h. test private investment incentives", "h. cost private investment treaties", "h. net private investment treaties", "h. costs private investment treaties"

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. direct foreign investment services") OR ("h. test private investment treaties"))~.
• Removing quotes may allow a broader search: (( h. direct foreign investment services ) or ( h. test private investment treaties ))~.
• Adding a wildcard symbol may retrieve word variants: (("h. direct foreign investment services") or ("h. test private investment treaties"))*.