Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
tuong va » truong va, thuong va, luong va
thong ty » thong tu, thong ly, thong my
dung lam » dung luan, dung tai, dung dat
tung va » trung va, dung va, vung va
ty dung » tay dung, ly dung, te dung

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 sang - thanh ((tung va) or (tuong va)) thong thong ty dung lam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - thanh ((tung va) OR (tuong va)) thong thong ty dung lam*.