Perhaps you should try some spelling variations:
wang daoping » wang xiaoping, wang danning, wang xiaobing
human gene » human genome, human gender, human genetic
human bone » human bones, human body
daoping a » daping a, dropping a, mapping a
sang minh » kang minah, anh minh, song min
minh dang » minh cong, mich dann

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 daoping a ((human gene) OR (human bone)) sang minh dang (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: wang daoping a ((human gene) or (human bone)) sang minh dang (hai or hari) ;*.