Perhaps you should try some spelling variations:
teaching china » teaching doing
last teaching » class teaching, breast teaching, based teaching
china robert » china hubert, china expert, china recent
robert bin » robert b, robert n, robert i
tan ying » fan ying, ran ying, tan yang
di die » die die, vi die, xi die

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: tan ying ((di die) OR (ii die)) last teaching china robert bin ;~.
• Adding a wildcard symbol may retrieve word variants: tan ying ((di die) or (ii die)) last teaching china robert bin ;*.