Perhaps you should try some spelling variations:
using dna » using dea, using data, using drag
hong than » hong tan, long thanh
hua gene » human gene, a gene, hua ren
gene yan » gene bank, ren yan, see yan
yan than » van thanh, yan zhang, yan clan
hong hai » shang hai, zhong tai, dang hai
dna hua » dong hua
line » life

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

• Performing a fuzzy search may retrieve terms with similar spellings: line using dna hua gene yan than ((hong hai) or (hong than)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: line using dna hua gene yan than ((hong hai) OR (hong than)) ;*.