Perhaps you should try some spelling variations:
human gene » human genome, human gender, human bone
hyoung kim » yong kim, hyoung il
hyung kim » yong kim
hy5 gene » 8.5 gene
yang thi » dang thi, yang chik, yang di
thi dang » thi hong, shi dan, shi ding
wang » wing, wan, lang
hai » hadi, haji, hari

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: wang ((hyoung kim) OR (hyung kim)) ((hy5 gene) OR (human gene)) yang thi dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((hyoung kim) or (hyung kim)) ((hy5 gene) or (human gene)) yang thi dang hai ;*.