Perhaps you should try some spelling variations:
wuhan china » tuan china, yunnan china
than china » tuan china, han china, can china
die totung » der totung, die tagung, die stiftung
long tail » long haul
die toten » die goten, die token, der toten
tan yang » dan yang, tan ying, tan yong
shui » shi, hui, shu

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: long tail ((than china) OR (wuhan china)) tan yang ((die totung) OR (die toten)) shui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long tail ((than china) or (wuhan china)) tan yang ((die totung) OR (die toten)) shui ;~".
• Adding a wildcard symbol may retrieve word variants: long tail ((than china) or (wuhan china)) tan yang ((die totung) OR (die toten)) shui ;*.