Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
trung hoa » trung hoc, trung ha
lang cong » dang cong, bang cong, hang cong
hoa lang » hoa dan, hoa van
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((trieu tinh) or (chiet tach)) - thanh trung hoa lang cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((trieu tinh) OR (chiet tach)) - thanh trung hoa lang cong san than cao.
• Adding a wildcard symbol may retrieve word variants: doi ((trieu tinh) or (chiet tach)) - thanh trung hoa lang cong san than cao*.