Perhaps you should try some spelling variations:
rene changed » rates changed, rate changes, rate change
have changed » has changed, a changed
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
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 yang luis ((rene changed) OR (have changed)) john wong sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang luis ((rene changed) OR (have changed)) john wong sau ;*".