Perhaps you should try some spelling variations:
changes merging » change emerging, changes managing, changes during
changes than » changes can, changes thus, changes ahead
xuan zhang » xuan thang, xiulan zhang, xiao zhang
wang xuan » wang xiuyan, wang xueman, wang yuhan
zhang ii » zhang i, zhang li, zhang si
wei cong » li cong, wei ming, wei wang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang xuan zhang ii ((changes merging) or (changes than)) wei cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang xuan zhang ii ((changes merging) OR (changes than)) wei cong shu ;*.