Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu lang » chieu sang, hieu quang, nhieu tang
cong thai » cong hai, hong thai, cong thanh
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
phi phi » chi phi, phi thi
thi phi » chi phi, thi phu, thi phap

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)) - cong thai lua dang cong tan ((phi phi) OR (thi phi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu tinh)) - cong thai lua dang cong tan ((phi phi) OR (thi phi)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) or (chieu tinh)) - cong thai lua dang cong tan ((phi phi) OR (thi phi))".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (chieu tinh)) - cong thai lua dang cong tan ((phi phi) OR (thi phi))*.