Perhaps you should try some spelling variations:
a changed » _ changed, a change, has changed
jie shang » jie zhang, jie song, xia shang
shang hai » shang kai, dang hai, chang ha
yang jie » yang jin, yang di, yang jui
lang a » lang 3, lang _, erlang a
i gene » _ gene, e gene, i gede
a gene » a genre, a gender, a gentle

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: lang a changed ((i gene) OR (a gene)) yang jie shang hai ;~.
• Adding a wildcard symbol may retrieve word variants: lang a changed ((i gene) or (a gene)) yang jie shang hai ;*.