Perhaps you should try some spelling variations:
employee development » iphone development
regional economic » regional economics
legal economic » local economic, global economic, special economic
unemployment » deployment

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 ((legal economic) OR (regional economic)) AND ((employment unemployment) OR (employee development)) (leed) working (paper OR papers).
• The words AND, OR and NOT may confuse the search; try adding quotes: "oecd ((legal economic) OR (regional economic)) and ((employment unemployment) or (employee development)) (leed) working (paper or papers)".
• Adding a wildcard symbol may retrieve word variants: oecd ((legal economic) OR (regional economic)) and ((employment unemployment) or (employee development)) (leed) working (paper or papers)*.