Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
trong quan » thong quan, tong quan, thong quang
quan than » quan thanh, qua than, quang thanh
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
than cau » toan cau, phan cau, 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 ((chieu xanh) or (thien thanh)) - thanh tung ((cua dung) or (qua dung)) trong quan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (thien thanh)) - thanh tung ((cua dung) OR (qua dung)) trong quan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (thien thanh)) - thanh tung ((cua dung) or (qua dung)) trong quan than cau*.