Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu lang » chieu sang, hieu quang, nhieu tang
sinh thai » dinh thi
dang cong » dung cong
thai lua » thai luan, thai luat, thai cua
lua dang » cua dang, lua sang, luan nang
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (chieu tinh)) - sinh thai lua dang cong tan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu tinh)) - sinh thai lua dang cong tan phan lap.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (chieu tinh)) - sinh thai lua dang cong tan phan lap*.