Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chua xang » chua nang, chuc nang, chua dong
chu bang » thu bang, chuc nang, chu quang
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) OR (chu bang)) - sach dung va thong cong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu bang)) - sach dung va thong cong dan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) OR (chu bang)) - sach dung va thong cong dan ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) OR (chu bang)) - sach dung va thong cong dan ((toan cao) or (toan ban))*.