Perhaps you should try some spelling variations:
chang mae » changes made
shang hai » shang kai, dang hai, zhang han
yan yang » yang yang, dan yang, tan yang
yao yang » yang yang
wei shen » kwei sheng, enwei shen, wei shang
hong hai » zhong tai, dang hai, hong tan
wang » wing, wan, lang

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: wang ((yan yang) OR (yao yang)) wei shen ((chang mae) OR (chang ha)) ((hong hai) OR (shang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) OR (yao yang)) wei shen ((chang mae) or (chang ha)) ((hong hai) or (shang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) OR (yao yang)) wei shen ((chang mae) or (chang ha)) ((hong hai) or (shang hai)) ;*.