Perhaps you should try some spelling variations:
human self » human cell, hoffman self
using dna » using dea, using data, using drag
human see » human side
wong shiu » wong siu, cong shu, song shin
hong shu » cong shu, tong shui, hong seo
yan tan » tan tan, yan clan, yan guan
line » life

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: line using dna ((human see) OR (human self)) yan tan ((hong shu) OR (wong shiu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "line using dna ((human see) OR (human self)) yan tan ((hong shu) or (wong shiu)) ;~".
• Adding a wildcard symbol may retrieve word variants: line using dna ((human see) OR (human self)) yan tan ((hong shu) or (wong shiu)) ;*.