Perhaps you should try some spelling variations:
thuat nhung » thuat hung, thuat chuong, thuat dung
thuat chung » thuat chuong, thuat hung, thuat cong
vien canh » bien canh, vien can, vien nganh
trong van » trong cac
vien anh » viet anh, dien anh, tien anh
van toan » van tuan, van tan, van thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((vien anh) OR (vien canh)) - canh tranh ((thuat nhung) or (thuat chung)) trong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien anh) OR (vien canh)) - canh tranh ((thuat nhung) OR (thuat chung)) trong van toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((vien anh) OR (vien canh)) - canh tranh ((thuat nhung) or (thuat chung)) trong van toan ban*".