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
tung toan » dung toan, truong toan, quang toan
thong san » thong sang, trong san, thong van
san phan » san pham, van phan, sat 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 ((chieu xanh) or (thien thanh)) - thanh tung toan thong thong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (thien thanh)) - thanh tung toan thong thong san phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (thien thanh)) - thanh tung toan thong thong san phan cau*.