Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trinh toan » tinh toan, thanh toan, trinh han
dung cong » dung trong
hanh han » hanh nhan, hanh phan, hanh san
cua dung » cua dang, cua dong, qua dung
toan tap » toan ban
han cua » hang cua, nhan cua, than cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (chieu sach)) - hanh han cua dung cong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - hanh han cua dung cong trinh toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu sach)) - hanh han cua dung cong trinh toan tap*.