Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yuan wang » yuan kang, qian wang, yu wang
shang kai » shang hai
yan wang » yang yang, qian wang, yan liang
hua gain » heat gain, run gain, hua ban
wang lin » wang li, wang qin, yang lin
dan hua » tan hua, wang hua, dong hua
jing ji » ying jin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((yuan wang) OR (yuan chang))) or (yan wang)) dan hua gain ((jing ji) or (wang lin)) shang kai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yuan wang) OR (yuan chang))) OR (yan wang)) dan hua gain ((jing ji) OR (wang lin)) shang kai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yuan wang) OR (yuan chang))) or (yan wang)) dan hua gain ((jing ji) or (wang lin)) shang kai ;*".