Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thuong thu » thuong thuc, thong thu, huong thu
trung tuan » trung thanh, trung tam, tran tuan
trinh toan » tinh toan, thanh toan, trinh han
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((thuong thu) OR (trung tuan)) dung cong trinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh ((thuong thu) or (trung tuan)) dung cong trinh toan cau*.