Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tuong cua » truong cua, huong cua, thong cua
cong bang » cuong bang, dong bang, hong bang
tung cua » trung cua, dung cua, tang cua
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - thanh ((tung cua) or (tuong cua)) nhung ((cong bang) or (cong tan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh ((tung cua) OR (tuong cua)) nhung ((cong bang) OR (cong tan)) phan tu.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh ((tung cua) or (tuong cua)) nhung ((cong bang) or (cong tan)) phan tu*.