Perhaps you should try some spelling variations:
changes made » changes a, changes due
zhang minh » zhang ming, zhang xin, chang min
wang qian » wang qiao, wang qin, wang liang
qian wang » yiqian wang, qian rong, qian yan
zhong zhi » hong ghi, zhong tai
zhang zhi » wang zhi, zhang wei, zhang dai
wang dan » wang yan, wang ban, wang yidan
dan she » can she, han shen, jian she

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: wang qian wang dan she ((zhang minh) OR (changes made)) ((zhong zhi) OR (zhang zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang qian wang dan she ((zhang minh) or (changes made)) ((zhong zhi) or (zhang zhi)) ;*.