Perhaps you should try some spelling variations:
tinh sang » tinh quang, tinh trang, trinh san
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan tap
toan ban » van ban
sang va » hang va, song va, sang ma

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - tinh sang va nhung ((cong dan) OR (cong san)) ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - tinh sang va nhung ((cong dan) OR (cong san)) ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - tinh sang va nhung ((cong dan) OR (cong san)) ((toan cao) or (toan ban))*.