Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
hanh mang » nhanh mang, hanh trang, nhanh lang
cong tinh » cong trinh, cong vinh, long tinh
cua rung » cua trung, cua rang, cua truong
qua dung » quang dung, su dung, qua song
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: doi chieu sang - hanh mang ((cua rung) or (qua dung)) cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh mang ((cua rung) OR (qua dung)) cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh mang ((cua rung) or (qua dung)) cong tinh toan ban*.