Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trung cap » truong cao, trung tam
cap trong » cay trong, ca trong, cad trong
quan cao » quang cao, quan cau, quan ao
cong ha » cong hoa, dong ha, cong tac
ha quan » hai quan, nha quan, hoa quan

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 (chieu sach)) - thanh trung cap trong cong ha quan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - thanh trung cap trong cong ha quan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu sach)) - thanh trung cap trong cong ha quan cao*.