Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung xay » trong xay, trung gay, trung tam
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ca cau, cac cau
ban cau » bang cau, ban can, van cau

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 - thanh trung xay dung cong dan ((chan cau) or (((can cau) OR (ban cau))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung xay dung cong dan ((chan cau) OR (((can cau) OR (ban cau)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung xay dung cong dan ((chan cau) or (((can cau) OR (ban cau))))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung xay dung cong dan ((chan cau) or (((can cau) OR (ban cau))))*.