Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
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 xanh) or (hieu lang)) - thanh tung ((cua rung) or (qua dung)) cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (hieu lang)) - thanh tung ((cua rung) OR (qua dung)) cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (hieu lang)) - thanh tung ((cua rung) or (qua dung)) cong tinh toan ban*.