Perhaps you should try some spelling variations:
climate changed » climate changes, climatic changes, climate changing
climate channel » climate changes, climate chance, climate changein
change expert » change extent, changing expert, channel experts
effects group » effect group, effects ground, effect groups
group papers » group part

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) OR (climate changed)) effects group papers ) OR ( oecd/america ((climate channel) OR (climate changed)) effects 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) OR (climate changed)) effects group papers ) or ( oecd/america ((climate channel) OR (climate changed)) effects group papers ))))".
• Adding a wildcard symbol may retrieve word variants: (( oecd/africa climate change expert group papers ) or ((( oecd/rica ((climate channel) OR (climate changed)) effects group papers ) or ( oecd/america ((climate channel) OR (climate changed)) effects group papers ))))*.