Perhaps you should try some spelling variations:
teaching learning » machine learning
learning yang » learning young, learning using, learning being
lang yan » wang yan, wang yang, zhang yan
can cost » can costa, can lost, can post
can lose » can close, can lost, can losers
run cash » can cash, von cash, non cash
yang shu » cong shu, tan shu, yang du
yan zi » yan zhi, yuan zi, ban zi

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: lang yan zi ((((can cost) OR (can lose))) OR (run cash)) teaching learning yang shu ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan zi ((((can cost) or (can lose))) or (run cash)) teaching learning yang shu ;*.