Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
trang va » tran van, hang va
va thong » va thuong, va phuong, he thong
cong san » cong tac
toan cao » toan tap
toan ban » van ban

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

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