Perhaps you should try some spelling variations:
truong luat » truong luan, truong quan, truong lam
chieu sang » chieu sach, chieu xanh, nhieu tang
truong cua » truong ca, truong quan, truong cao
phung cong » nhung cong, phong cong, nhung chong
hieu lang » hieu quang, nhieu tang, hieu van
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan

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 (hieu lang)) - thanh ((truong luat) or (truong cua)) phung cong tan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - thanh ((truong luat) OR (truong cua)) phung cong tan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - thanh ((truong luat) or (truong cua)) phung cong tan phan tu".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - thanh ((truong luat) or (truong cua)) phung cong tan phan tu*.