Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan ping » sukan ping, yuen ping
best tong » best thing, best tool, est ton
can cost » can costa, chain cost, can boost
can lost » can lose, can boost, can close
can post » can past, can postal, can boost
tong hui » wang hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan ping ((((can cost) or (can lost))) or (can post)) sharing best tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan ping ((((can cost) OR (can lost))) OR (can post)) sharing best tong hui ;.
• Adding a wildcard symbol may retrieve word variants: wang yuhan ping ((((can cost) or (can lost))) or (can post)) sharing best tong hui ;*.