Perhaps you should try some spelling variations:
channel experts » channel export, channel effects, channel excess
channel events » change events, channel effects, channel currents
area climate » asia climate, sea climate, boreal climate
group papers » group part
iea climate » sea climate, ira climate, rica climate

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/((iea climate) OR (((area climate) OR (africa climate)))) ((channel experts) OR (channel events)) group papers.
• Adding a wildcard symbol may retrieve word variants: oecd/((iea climate) or (((area climate) or (africa climate)))) ((channel experts) or (channel events)) group papers*.