Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, cong dong
than man » than ma, tran manh, than phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu nganh - hanh tinh cua thong ((cong dan) OR (huong dan)) ((than man) OR (thanh san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu nganh - hanh tinh cua thong ((cong dan) OR (huong dan)) ((than man) OR (thanh san))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh tinh cua thong ((cong dan) OR (huong dan)) ((than man) OR (thanh san))*.