Perhaps you should try some spelling variations:
"initial investment projects series" » "initial development projects series", "national investment projects series", "capital investment projects series", "initial investment project series", "initial investment prospects series", "initial investment projects sermons"
"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: (("initial investment projects series") or ("industrial development center series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("initial investment projects series") OR ("industrial development center series")).
• Removing quotes may allow a broader search: (( initial investment projects series ) or ( industrial development center series )).
• Adding a wildcard symbol may retrieve word variants: (("initial investment projects series") or ("industrial development center series"))*.