Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
ncanh tranh » nhanh thanh, can tranh, nganh thanh
thien hach » thien thanh, hien hanh
kien sach » dien sach, vien bach, kien mac
cua nhung » va nhung
trong van » trong cac
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (kien sach)) - ((canh tranh) or (ncanh tranh)) cua nhung trong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (kien sach)) - ((canh tranh) OR (ncanh tranh)) cua nhung trong van toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (kien sach)) - ((canh tranh) or (ncanh tranh)) cua nhung trong van toan cao*.