Perhaps you should try some spelling variations:
employment development » employee development, development development, environment development
special economic » social economic, spatial economics
local economic » global economic, social economic

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

• If you are trying to use Boolean operators, they must be ALL CAPS: oecd ((special economic) OR (local economic)) AND employment development (leed) working (paper OR papers).
• The words AND, OR and NOT may confuse the search; try adding quotes: "oecd ((special economic) or (local economic)) and employment development (leed) working (paper OR papers)".
• Adding a wildcard symbol may retrieve word variants: oecd ((special economic) or (local economic)) and employment development (leed) working (paper OR papers)*.