Perhaps you should try some spelling variations:
des patienten » der patienten, des prasidenten, und patienten
2.4 among » 2.4.2 among, 2.15 among, 1.8 among
1.5 among » 1.8 among, 2.15 among, 19 among
yan yang » yang yang, yao yang, tan yang
dan yang » daun yang, tan yang, wang yang
plan des » plan de, bilan des, plan 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: lang ((yan yang) OR (dan yang)) plan des patienten ((2.4 among) OR (1.5 among)) masters ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((yan yang) or (dan yang)) plan des patienten ((2.4 among) OR (1.5 among)) masters ;~".
• Adding a wildcard symbol may retrieve word variants: lang ((yan yang) or (dan yang)) plan des patienten ((2.4 among) OR (1.5 among)) masters ;*.