Perhaps you should try some spelling variations:
performance contract » performance contracts
performance series » performance studies, performance size
local performance » social performance, global performance, total performance
macro performance » crop performance, ceo performance, machine performance
improving local » improving global, improving fiscal
improving macro » improving air, improving care, improving co

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( improving local performance series. ) or ( improving macro performance contract. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( improving local performance series. ) OR ( improving macro performance contract. )).
• Adding a wildcard symbol may retrieve word variants: (( improving local performance series. ) or ( improving macro performance contract. ))*.