Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, thien thanh, thien chanh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
tien anh » tieng anh, tien manh, dien anh
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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) or (((thien anh) OR (tien anh)))) - hanh trinh cua thong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (((thien anh) OR (tien anh)))) - hanh trinh cua thong cong dan than cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) or (((thien anh) OR (tien anh)))) - hanh trinh cua thong cong dan than cao*".