Perhaps you should try some spelling variations:
ting ting » ting ping, ting peng
hua gene » human gene, a gene, hua ren
tang tin » tang tang, tang li, lang tim
tang min » chang min, sang minh, yang mind
hong shu » cong shu, tong shui, wong shiu
nan yan » nan ya, wang yan, qian yan
yan ya » nan ya, yang yao, yan yuan
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan ya) or (nan yan)) hua gene ((((tang tin) OR (ting ting))) or (tang min)) hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan ya) OR (nan yan)) hua gene ((((tang tin) OR (ting ting))) OR (tang min)) hong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan ya) or (nan yan)) hua gene ((((tang tin) OR (ting ting))) or (tang min)) hong shu ;*".