Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
luan thong » luan phong, luan tuong, luat thong
thong cong » trong cong, tong cong, thong thong
cong tinh » cong trinh, cong vinh, long tinh
anh dung » anh dong, anh huong, sach dung
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 ((thieu xanh) OR (chieu xanh)) - anh dung luan thong cong tinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - anh dung luan thong cong tinh toan cau*.