Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
lieu tinh » trieu tinh, diep tinh, bien tinh
tinh thai » sinh thai, tinh toan, tinh chat
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 phi » tac phi, tan phu, toan phai
phi phi » chi phi, phi thi, thi phi

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 (lieu tinh)) - tinh thai lua dang cong tan phi phi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (lieu tinh)) - tinh thai lua dang cong tan phi phi.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (lieu tinh)) - tinh thai lua dang cong tan phi phi*.