Perhaps you should try some spelling variations:
teaching china » teaching doing
china robert » china hubert, china expert, china recent
die lasten » die kosten, die ersten
robert bin » robert b, robert n, robert i
tan ying » fan ying, ran ying, tan yang
die last » died last, time last, die lage
ying di » yang di, ying jin

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