Perhaps you should try some spelling variations:
tieu danh » dieu danh, tiep danh, thien danh
hanh mang » nhanh mang, hanh trang, nhanh lang
nang cong » nang song, dang cong, bang cong
cong tan » cong tac, cong san, cong thanh
tran ban » tranh ban, tran van, toan ban
mang va » mang vua, hang va, bang va
va nang » van nang, da nang, cam nang

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) or (dieu hanh)) - hanh mang va nang cong tan tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu danh) OR (dieu hanh)) - hanh mang va nang cong tan tran ban*.