Perhaps you should try some spelling variations:
last teaching » class teaching, breast teaching, based teaching
change robert » change roberto, chang roberto, zhang robert
ying sein » ying jin, eins sein
tan ying » fan ying, ran ying, tan yang
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 sein die last teaching ((change robert) OR (chase robert)) n ;~.
• Adding a wildcard symbol may retrieve word variants: tan ying sein die last teaching ((change robert) or (chase robert)) n ;*.