Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
time last » time list, time lost, time class
time past » time part, time pad, some past
dong bin » dong sin, dann bin
dong di » dong sin

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 ((time last) OR (time past)) cheng zhang ((dong bin) or (dong di)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang ((time last) OR (time past)) cheng zhang ((dong bin) OR (dong di)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang ((time last) OR (time past)) cheng zhang ((dong bin) or (dong di)) ;*".