Perhaps you should try some spelling variations:
teaching chinese » teaching china, teaching case, teaching cases
chinese roberto » change roberto
died last » der last
roberto n » robert _, robert e, robert j
tan ying » fan ying, ran ying, tan yang
fan xing » fan ying, fan xibo, tan xin
die last » die lasten, time last, die lage

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