Perhaps you should try some spelling variations:
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
chu sang » chu bang, thu sang, chieu sang
manh cua » doanh cua, ban cua
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac
cho chu » cho thue
khan ap » khan cap, han ap, khan dam

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 chu sang - canh manh cua dung cong tac ((((than cau) OR (than cap))) OR (khan ap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho chu sang - canh manh cua dung cong tac ((((than cau) OR (than cap))) or (khan ap))~".
• Adding a wildcard symbol may retrieve word variants: cho chu sang - canh manh cua dung cong tac ((((than cau) OR (than cap))) or (khan ap))*.