Perhaps you should try some spelling variations:
nang sang » nang song, nong san
treo cuu » treo chu, tro cua, theo chu
cuu nang » chuc nang, cam nang, cuu van
ca thong » ca thuong, va thong, ca trong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan ban, toan tap
sang ca » sang cua, hang ca, sang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: treo cuu nang - nang sang ca thong ((cong dan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: treo cuu nang - nang sang ca thong ((cong dan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: treo cuu nang - nang sang ca thong ((cong dan) or (cong san)) toan cau*.