Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
manh trung » manh tung, manh hung, sinh trung
ho chieu » theo chieu, hoc thieu, doi chieu
voi dung » noi dung, hoi dung, toi dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
can cau » van cau, ban cau, ca 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 - ((manh trung) OR (thanh trung)) voi dung ((cong dan) or (cong san)) can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((manh trung) OR (thanh trung)) voi dung ((cong dan) OR (cong san)) can cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((manh trung) OR (thanh trung)) voi dung ((cong dan) or (cong san)) can cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((manh trung) OR (thanh trung)) voi dung ((cong dan) or (cong san)) can cau*.