Perhaps you should try some spelling variations:
trang tin » trong tin, trung tin, trang trinh
dung cong » dung trong
chi xanh » chi anh, chi danh, chi hanh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - thanh ((trang tin) or (trong tieng)) dung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - thanh ((trang tin) OR (trong tieng)) dung cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - thanh ((trang tin) or (trong tieng)) dung cong dan toan cao*.