Perhaps you should try some spelling variations:
huang ting » huang ying, huang bin, huang lin
huang jing » huang ying, wang jing, huang bin
china gene » china gender, china agenda
yuan kang » yuan wang, yuan chang, chan kang
gene jing » zeng jing
jing ji » ying jin
ji cong » jiu cong, li cong, ji zhong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan kang) or (((huang ting) OR (huang jing)))) can china gene jing ji cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan kang) OR (((huang ting) OR (huang jing)))) can china gene jing ji cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan kang) or (((huang ting) OR (huang jing)))) can china gene jing ji cong shu ;*".