Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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 (hieu manh)) - thanh trung ((suat thong) or (cua khong)) cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (hieu manh)) - thanh trung ((suat thong) OR (cua khong)) cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) OR (hieu manh)) - thanh trung ((suat thong) or (cua khong)) cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) OR (hieu manh)) - thanh trung ((suat thong) or (cua khong)) cong dan phan cau*.