Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trang va » tran van, hang va
cong san » cong tac
toan cao » toan ban, toan tap
khan cap » khan ap, than cap, khoan cam
va ban » van ban, va bai, va bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet danh - hanh trang va ban ((cong ty) or (cong san)) ((toan cao) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh trang va ban ((cong ty) OR (cong san)) ((toan cao) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh trang va ban ((cong ty) or (cong san)) ((toan cao) or (khan cap))*.