Perhaps you should try some spelling variations:
dong hoang » hong hong
gene one » gene clone, gene gene, none one
man cong » yan cong, man houng, man can
cong sun » cong shu, cong van, wing sun
y human » 2 human, 3 human, 1 human
gene we » gene set
gene w » gene _, gene m, gene 1

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((done hoang) or (dong hoang)) y human ((gene one) or (((gene we) OR (gene w)))) man cong sun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((done hoang) OR (dong hoang)) y human ((gene one) OR (((gene we) OR (gene w)))) man cong sun ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((done hoang) or (dong hoang)) y human ((gene one) or (((gene we) OR (gene w)))) man cong sun ;".
• Adding a wildcard symbol may retrieve word variants: ((done hoang) or (dong hoang)) y human ((gene one) or (((gene we) OR (gene w)))) man cong sun ;*.