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
sein eine » sein eigener
roberto n » robert _, robert e, robert j
tan ying » fan ying, ran ying, tan yang
jin ying » li ying
sein die » sein de, sein des, sein du

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 (jin ying)) ((sein die) OR (sein eine)) last teaching chinese roberto n ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan ying) or (jin ying)) ((sein die) OR (sein eine)) last teaching chinese roberto n ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan ying) or (jin ying)) ((sein die) OR (sein eine)) last teaching chinese roberto n ;*.