Perhaps you should try some spelling variations:
"industrial development policies sources" » "industrial development policy sources", "industrial development projects sources", "industrial development policies series", "industrial development policies survey", "industrial development policies discourses"
"industrial development first period" » "industrial development forest period", "industrial development fast period", "industrial development firm period", "industrial development first person", "industrial development first price"

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

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