Perhaps you should try some spelling variations:
die schulden » die schule, der schulden, die schuler
die schulen » die schule, die schuler, die schulung
ying yang » yang yang, yin yang, ying chang
shang hai » shang kai, dang hai, chang ha
tan ying » fan ying, ran ying, tan yang
yang yi » yang xi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tan ying yang ((die schulen) OR (die schulden)) ((yang yi) or (yang di)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan ying yang ((die schulen) OR (die schulden)) ((yang yi) OR (yang di)) shang hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tan ying yang ((die schulen) OR (die schulden)) ((yang yi) or (yang di)) shang hai ;*".