Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doanh cua » doanh luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
ho chau » ha chau, o chau, khoa chau
ban cua » ban quan
ho chu » hoi chu, cho chu, ho chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chau) OR (ho chu)) tinh - hanh ((ban cua) or (doanh cua)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chau) OR (ho chu)) tinh - hanh ((ban cua) OR (doanh cua)) nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chau) OR (ho chu)) tinh - hanh ((ban cua) or (doanh cua)) nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chau) OR (ho chu)) tinh - hanh ((ban cua) or (doanh cua)) nhung cong dan toan cao*.