Perhaps you should try some spelling variations:
thuong luong » theo luong, cong luong, thong thuong
thong huong » thong thuong, thong duong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
trung cao » truong cao, trung cap, trung ca
doan phan » doanh phan, toan phan, dan phan
ho chieu » theo chieu, hoc thieu, doi chieu
trung co » trung bo, trong co, truong cao
phan cau » phan dau, phan cac, phan tu

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 - thanh ((trung cao) OR (trung co)) ((thong huong) OR (thuong luong)) doan phan cau~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((trung cao) or (trung co)) ((thong huong) or (thuong luong)) doan phan cau*.