Perhaps you should try some spelling variations:
channel experts » channel export, channel effects, channel events
climate channel » climate changes, climate changed, climate changein
america climate » american climate
change expert » change extent, changing expert, change effect
experts group » experts ground, expert groups, experts around
group papers » group part
rica climate » iea climate, ira climate, african 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/africa climate change expert group papers ) OR ((( oecd/rica climate channel experts group papers ) OR ( oecd/america climate channel experts group papers )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( oecd/africa climate change expert group papers ) or ((( oecd/rica climate channel experts group papers ) OR ( oecd/america climate channel experts group papers ))))".
• Adding a wildcard symbol may retrieve word variants: (( oecd/africa climate change expert group papers ) or ((( oecd/rica climate channel experts group papers ) OR ( oecd/america climate channel experts group papers ))))*.