Perhaps you should try some spelling variations:
"industrial investment treaties series" » "industrial investments treaties series", "industry investment treaties series", "initial investment treaties series", "industrial investment strategies series", "industrial investment activities series", "industrial investment incentives series"
"industrial development aid series" » "industrial development a series", "industrial development bank series", "industrial development _ series", "industrial development aid services"

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

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