Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh mang » trinh bang, trinh nang, trinh giang
mang thong » mang trong, hang thuong, dang thuong
thong cong » trong cong, tong cong, thong thong
cong tac » cong ty
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac
ho chau » ha chau, o chau, khoa chau
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 - canh trinh mang thong cong tac ((than cau) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chau) OR (ho chu)) tinh - canh trinh mang thong cong tac ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chau) or (ho chu)) tinh - canh trinh mang thong cong tac ((than cau) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: ((ho chau) or (ho chu)) tinh - canh trinh mang thong cong tac ((than cau) OR (than cap))*.