Perhaps you should try some spelling variations:
hua parent » a parent
wang yang » wang yan, wang liang, wang yanling
yang yan » yang yang, wang yan, yang fan
parent a » parent _, parent ͳ
liu gang » liu gangs, liu yang, li gang
yan hua » tan hua, ya hua, wang hua
liu yan » lili yan
saur » sur, spur

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yan hua parent a ((liu gang) or (liu yan)) saur ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yan hua parent a ((liu gang) OR (liu yan)) saur ;.
• Adding a wildcard symbol may retrieve word variants: wang yang yan hua parent a ((liu gang) or (liu yan)) saur ;*.