Perhaps you should try some spelling variations:
"h. government sector investment series" » "h. government support investment series", "h. government action investment series", "h. government structure investment series", "h. government sector investment services", "h. government sector investment barriers", "h. government sector investment treaties"
"h. among ports investment flows" » "h. among port investments flows", "h. among forest investment flows", "h. among does investment flows", "h. among ports investment funds"

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. government sector investment series") OR ("h. among ports investment flows"))~.
• Removing quotes may allow a broader search: (( h. government sector investment series ) or ( h. among ports investment flows ))~.
• Adding a wildcard symbol may retrieve word variants: (("h. government sector investment series") or ("h. among ports investment flows"))*.