Perhaps you should try some spelling variations:
liang zwang » xiliang zhang
hard things » hard thing, bad things, smart things
things were » things here, things we, things work
wang liang » wang yang
zwang 3.3 » zwang 3.2, fang 3.3, zwang 13
song bing » song ming, song byung, song jin
3.3 hard » 3.1 hard, 3.3 shared, 5.3.3 hard
tan yong » tan hong, tan kong, tan yang
dong bin » dong sin, dong di, dann bin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang zwang 3.3 hard things were ((tan yong) OR (((song bing) OR (dong bin)))) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang zwang 3.3 hard things were ((tan yong) or (((song bing) or (dong bin)))) ;*.