Perhaps you should try some spelling variations:
dong hoang » hong hong
human gene » human genome, human gender, human bone
minh hongo » min hong
hoang yan » huang yang, wang yan, zhang yan
yan human » than human, non human, von human
gene bank » gene banks, one bank, genomen bank
cong » congo, long, hong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: dong hoang yan human gene bank ((minh hongo) or (minh cong)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong hoang yan human gene bank ((minh hongo) OR (minh cong)) shu ;.
• Adding a wildcard symbol may retrieve word variants: dong hoang yan human gene bank ((minh hongo) or (minh cong)) shu ;*.