Perhaps you should try some spelling variations:
jeong hyeok » jeong dahyeon
minh jeong » min jeong, minh cong
juan wang » yuan wang, juan meng, juan rana
gene bank » gene banks, one bank, genomen bank
von juan » von jan, don juan, von jean
wang hai » dang hai, wang hui, shang hai
die bank » die banken

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: von juan wang hai ((gene bank) OR (die bank)) minh jeong hyeok ;~.
• Adding a wildcard symbol may retrieve word variants: von juan wang hai ((gene bank) or (die bank)) minh jeong hyeok ;*.