Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
tong cong » cong cong, dung cong, dang cong
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap
doi chi » doi khi
chi anh » chi danh, chi hanh, thi anh

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 anh - ((hanh trang) or (hanh trinh)) va ((tong cong) or (trong cong)) tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi anh - ((hanh trang) OR (hanh trinh)) va ((tong cong) OR (trong cong)) tac than cau.
• Adding a wildcard symbol may retrieve word variants: doi chi anh - ((hanh trang) or (hanh trinh)) va ((tong cong) or (trong cong)) tac than cau*.