Perhaps you should try some spelling variations:
changes made » changes a, changes due
chang mae » chang ha
jeong shu » jeong su, cong shu
wang nan » wang yan, wang ban, wang dan
nan yan » nan ya, wang yan, qian yan
yi chen » jui chen
yan yi » yang yi, tan yi, yan zi

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 nan yan yi chen ((chang mae) OR (changes made)) jeong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang nan yan yi chen ((chang mae) or (changes made)) jeong shu ;*.