Perhaps you should try some spelling variations:
thanh trung » thanh tung
khong cong » thong cong, khong cang, khong con
chong cong » cong cong, thong cong, cuong cong
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - thanh trung cua ((khong cong) or (chong cong)) ban ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh trung cua ((khong cong) OR (chong cong)) ban ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - thanh trung cua ((khong cong) or (chong cong)) ban ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh trung cua ((khong cong) or (chong cong)) ban ((than cap) OR (khan cap))*.