Perhaps you should try some spelling variations:
hanh trinh » canh tranh
tieu danh » dieu danh, tiep danh, thien danh
dang cong » dung cong
cong ban » cong bang, cong san, cong tan
ban hanh » ban hang
hanh cau » nhanh cau, hang cau, hanh cac
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu danh - ((hanh trinh) or (hanh chinh)) va dang cong ban hanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu danh - ((hanh trinh) OR (hanh chinh)) va dang cong ban hanh cau*.