Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh dang » hanh dong, hanh dung, hanh mang
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
anh dang » anh dong, anh dung, anh bang
cua dung » cua dang, cua dong, qua dung
toan ban » van ban

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 - ((hanh dang) or (anh dang)) cua dung cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((hanh dang) OR (anh dang)) cua dung cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - ((hanh dang) or (anh dang)) cua dung cong tinh toan ban*.