Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
hien nhanh » thien thanh, tien thanh, dien thanh
hien hanh » dieu hanh
tuong cua » truong cua, huong cua, thong cua
dong song » dong son, song song, dong cong
cua dong » chua dong, cua cong, cua dang
van than » van thanh, van thang, van tuan

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 nhanh) or (hien hanh)) - thanh tuong cua dong song ((van than) or (van ban)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - thanh tuong cua dong song ((van than) OR (van ban)) cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (hien hanh)) - thanh tuong cua dong song ((van than) or (van ban)) cap*.