Perhaps you should try some spelling variations:
human bone » human bones, human body
yang guang » yang yang, yang liang
using dna » using data, using drag, using dual
using dea » using dem, using delta, using ideal
tong shui » tong hui, cong shu, gong hui
yan guan » gan guan, yan yuan, yihan 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) OR (using dea)) human bone ((yan guan) OR (yang guang)) tong shui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "line ((using dna) OR (using dea)) human bone ((yan guan) or (yang guang)) tong shui ;~".
• Adding a wildcard symbol may retrieve word variants: line ((using dna) OR (using dea)) human bone ((yan guan) or (yang guang)) tong shui ;*.