Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
cong thai » cong hai, hong thai, cong thanh
dung cong » dung trong
cong luan » tong luan, cong tuan, dong luan
thai lua » thai luan, thai luat, thai cua
lua dung » qua dung, luan hung, qua duong
van tap » van tai, van tan, han tap

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) or (chieu tinh)) - cong thai lua dung cong luan van tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu tinh)) - cong thai lua dung cong luan van tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu tinh)) - cong thai lua dung cong luan van tap*.