Perhaps you should try some spelling variations:
"initial investment forestiers series" » "initial investment treaties series", "initial investment forecasting series", "initial investment foreign series", "national investment forestiers series", "capital investment forestiers series", "initial investment frontiers series", "initial investment forestiers des", "initial investment formations series"
"industrial development case survey" » "industrial development china survey", "industrial development based survey", "industrial development scale survey", "industrial development use survey"

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: (("initial investment forestiers series") OR ("industrial development case survey"))~.
• Removing quotes may allow a broader search: (( initial investment forestiers series ) or ( industrial development case survey ))~.
• Adding a wildcard symbol may retrieve word variants: (("initial investment forestiers series") or ("industrial development case survey"))*.