Perhaps you should try some spelling variations:
teaching chinese » teaching china, teaching case, teaching cases
chinese roberto » change roberto
last teaching » class teaching, breast teaching, based teaching
roberto n » robert _, robert e, robert j
tan ying » ran ying, tan yang, tan yong
fan ying » fan xing, ran ying, jin ying
sein die » sein de, sein eine, sein des
die last » died last, die lasten, time last

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) OR (fan ying)) sein die last teaching chinese roberto n ;~.
• Adding a wildcard symbol may retrieve word variants: ((tan ying) or (fan ying)) sein die last teaching chinese roberto n ;*.