Perhaps you should try some spelling variations:
chuc danh » chuc nganh, thuc hanh, chuc nang
tranh cua » manh cua
doanh cua » doanh luan
bang cong » dang cong, bang song, hang cong
chu manh » ho manh, chu han, chu van
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

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: cho ((chuc danh) OR (chu manh)) - hanh ((tranh cua) OR (doanh cua)) bang cong tan chan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((chuc danh) or (chu manh)) - hanh ((tranh cua) OR (doanh cua)) bang cong tan chan cau~".
• Adding a wildcard symbol may retrieve word variants: cho ((chuc danh) or (chu manh)) - hanh ((tranh cua) OR (doanh cua)) bang cong tan chan cau*.