Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
chieu sang » chieu sach, chieu xanh, hieu lang
cong thanh » dong thanh, cong trinh, cong tan
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
chu sang » chu bang, thu sang, chuc nang
cong ban » cong bang, cong san, cong tan
hang cau » hang dau, hang ca, nhung cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu sang) OR (chieu sang)) - hanh tang luan trong ((cong ban) or (cong thanh)) hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sang) OR (chieu sang)) - hanh tang luan trong ((cong ban) OR (cong thanh)) hang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sang) OR (chieu sang)) - hanh tang luan trong ((cong ban) or (cong thanh)) hang cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sang) OR (chieu sang)) - hanh tang luan trong ((cong ban) or (cong thanh)) hang cau*.