Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yang yang » wang yang, wang yan
gene kang » gene bank
kang tin » kang tae, kang han, kang kim
tin hong » tan hong, kia hong, thi hong
dang a » fang a, lang a, dang hai
a gene » a genre, a gender, a gentle

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (wang yuhan)) dang a gene kang tin hong seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yuhan)) dang a gene kang tin hong seo ;*.