Perhaps you should try some spelling variations:
doing von » doing un, ing von
daten can » daten c, daten von, daten a
when coal » when goal, women coal, when can
can when » can women, can we, can win
coal min » coal mine, coal mines, coal oil
yang jin » yang jie, yang jun, ying jin
yang yi » yang jui
yang xi » yang jui

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: doing von daten can when coal min ((((yang jin) OR (yang yi))) OR (((yang di) OR (yang xi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: doing von daten can when coal min ((((yang jin) or (yang yi))) or (((yang di) or (yang xi)))) ;*.