Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
chao chu » cho chu, cua chu, cao cho
chu xanh » chu manh, chieu xanh, chua xang
thang su » thong su, tang su, thang tu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao chu xanh - cang thang su dung ((cong dan) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu xanh - cang thang su dung ((cong dan) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: chao chu xanh - cang thang su dung ((cong dan) or (cong san)) than cau*.