Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
cua phuong » cuu phuong, cuc phuong, luan phuong
hieu manh » hieu nganh, dieu hanh, hien hanh
cua thong » cua thuong, cua khong, cua tong
huong van » huong dan, duong van, hong van
van chat » cao chat

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 manh) OR (chieu xanh)) - thanh trung ((cua thong) or (cua phuong)) huong van chat va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - thanh trung ((cua thong) OR (cua phuong)) huong van chat va.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (chieu xanh)) - thanh trung ((cua thong) or (cua phuong)) huong van chat va".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (chieu xanh)) - thanh trung ((cua thong) or (cua phuong)) huong van chat va*.