Perhaps you should try some spelling variations:
yang yao » yang yang, wang yan, yang fan
hua chen » jui chen, yu chen, a chen
chen yan » chen yang, chen tan, chen yun
yang ya » yang ka, yang y, yang yang
yang yi » yang di, yang xi, yang jui
li cong » li rong, li song, jiu cong
yan li » yang li, yuan li, gan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((yang ya) or (((yang yao) OR (yang yi)))) hua chen yan li cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((yang ya) OR (((yang yao) OR (yang yi)))) hua chen yan li cong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang ya) or (((yang yao) OR (yang yi)))) hua chen yan li cong shu ;".
• Adding a wildcard symbol may retrieve word variants: dong ((yang ya) or (((yang yao) OR (yang yi)))) hua chen yan li cong shu ;*.