Perhaps you should try some spelling variations:
teaching chinese » teaching china, teaching case, teaching cases
teaching change » teaching chapter, teaching china, teaching case
tan ying » fan ying, ran ying, tan yang
main die » mainz die
robert n » robert _, robert e, robert j
bin die » sein 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 ((bin die) OR (main die)) last ((teaching change) OR (teaching chinese)) robert n ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tan ying ((bin die) or (main die)) last ((teaching change) OR (teaching chinese)) robert n ;~".
• Adding a wildcard symbol may retrieve word variants: tan ying ((bin die) or (main die)) last ((teaching change) OR (teaching chinese)) robert n ;*.