Perhaps you should try some spelling variations:
done using » line using, move using
using data » missing data
data bias » data base, data big, dataset bias
bias chen » bias when
yang jing » wang jing, yang jin, huang jing
yang jun » yang jui, pang jun, yang jin
yang yue » wang yue, yang yun, yang jui
jing ji » ying jin

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: done using data bias chen ((((yang jing) OR (jing ji))) OR (yang jun)) ((yang yue) OR (yang di)) ;~.
• Adding a wildcard symbol may retrieve word variants: done using data bias chen ((((yang jing) or (jing ji))) or (yang jun)) ((yang yue) or (yang di)) ;*.