Perhaps you should try some spelling variations:
"national investment theories series" » "international investment theories series", "capital investment theories series", "national treatment theories series", "national investment treaties series", "national investment series series", "national investment theory series", "national investment theses series"
"industrial development case series" » "industrial development china series", "industrial development care series", "industrial development cass series", "industrial development case stories"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("national investment theories series") or ("industrial development case series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("national investment theories series") OR ("industrial development case series")).
• Removing quotes may allow a broader search: (( national investment theories series ) or ( industrial development case series )).
• Adding a wildcard symbol may retrieve word variants: (("national investment theories series") or ("industrial development case series"))*.