Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hanh tung » thanh tung, manh tung, hanh dung
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
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: ((doc hieu) or (doi chi)) sang - ((hanh tung) or (hanh trang)) cua cong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) sang - ((hanh tung) OR (hanh trang)) cua cong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (doi chi)) sang - ((hanh tung) or (hanh trang)) cua cong cong dan toan cao*.