Perhaps you should try some spelling variations:
"national investment strategy series" » "international investment strategy series", "capital investment strategy series", "national treatment strategy series", "national investment rate series", "national investment rates series", "national development strategy series"
"industrial development center series" » "industrial development case series", "industrial development century series", "industrial development gender series", "industrial development center studies"

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