Perhaps you should try some spelling variations:
thuong luong » cong luong, thong thuong
chieu sang » chieu sach, chieu xanh, hieu lang
theo luong » tien luong
hanh tang » hanh trang, anh tang, hanh mang
ho chieu » theo chieu, hoc thieu, doi chieu
tang cua » mang cua, hang cua, tang luan
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: ho chieu sang - hanh tang cua ((thuong luong) OR (theo luong)) tinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh tang cua ((thuong luong) or (theo luong)) tinh toan cau*.