Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, truong cong
thuong dong » phuong dong, tuong dong, chuong dong
hien nhanh » thien thanh, tien thanh, dien thanh
tang thanh » dang thanh, trung thanh, hoang thanh
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
thanh lap » thanh san, phan lap, thanh hai

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) or (hien nhanh)) - thanh trung cua ((thuong cong) OR (thuong dong)) tang thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (hien nhanh)) - thanh trung cua ((thuong cong) OR (thuong dong)) tang thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hanh) or (hien nhanh)) - thanh trung cua ((thuong cong) OR (thuong dong)) tang thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (hien nhanh)) - thanh trung cua ((thuong cong) OR (thuong dong)) tang thanh lap*.