Perhaps you should try some spelling variations:
bhutan gender » rhoton gender
human gender » human gene, german gender, human genome
shang john » change john, shang jin, shang jen
john song » john wong, john bonn, john ngosong
hy5 gene » 8.5 gene
song shu » cong shu, song shin, tong shui
yan yan » yan yuan, nan yan, yang yang
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 yan ((hy5 gene) or (((human gender) or (bhutan gender)))) shang john song shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yan ((hy5 gene) OR (((human gender) OR (bhutan gender)))) shang john song shu ;.
• Adding a wildcard symbol may retrieve word variants: wang yan yan ((hy5 gene) or (((human gender) or (bhutan gender)))) shang john song shu ;*.