Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
tam nhung » tham nhung, cam nhung, nam nhung
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chinh sach)) - thanh trung tam nhung cong dan ((than cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chinh sach)) - thanh trung tam nhung cong dan ((than cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chinh sach)) - thanh trung tam nhung cong dan ((than cau) or (toan cao))*.