Perhaps you should try some spelling variations:
rene changed » rates changed, rate changes, have changed
changed john » change john, changed our, changed post
wang yang » wang yan, wang yanling
yang luis » yang jui, san luis, jan luis
john wong » john song, john bonn
wong sau » wong sam, wong siu, wong shiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) OR (wang liang)) yang luis rene changed john wong sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) OR (wang liang)) yang luis rene changed john wong sau ;*".