Perhaps you should try some spelling variations:
planned languages » planet language, plain language, based languages
language survival » language social, language services
lonely planned » lonely planet
survival rates » survival rate
plans language » planet language, plain language, pilots language
lonely plans » lonely planet

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( lonely planned languages survival rates ) or ( lonely plans language survival rates ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( lonely planned languages survival rates ) OR ( lonely plans language survival rates )).
• Adding a wildcard symbol may retrieve word variants: (( lonely planned languages survival rates ) or ( lonely plans language survival rates ))*.