Perhaps you should try some spelling variations:
changes made » changes a, changes due
cheng wei » chen wei, cheng hei, cheng siwei
wei chen » wei shen, frei chen, jui chen
yang jie » yang jin, yang jui, yang xi
tin can » tin tan
tan tan » tas tan, tin tan, tang tang
yang yi » yang xi, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tin can) or (tan tan)) cheng wei chen ((((yang jie) or (yang di))) or (yang yi)) changes made ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tin can) OR (tan tan)) cheng wei chen ((((yang jie) OR (yang di))) OR (yang yi)) changes made ;.
• Adding a wildcard symbol may retrieve word variants: ((tin can) or (tan tan)) cheng wei chen ((((yang jie) or (yang di))) or (yang yi)) changes made ;*.