Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
cua tong » cua dong, cua nong, cua song
cong dan » cong san, cong tan, huong dan
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu nganh - thanh trung ((cua tong) or (cua cong)) cong dan ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu nganh - thanh trung ((cua tong) OR (cua cong)) cong dan ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu nganh - thanh trung ((cua tong) or (cua cong)) cong dan ((than cau) or (toan cau))*.