Perhaps you should try some spelling variations:
ban thanh » ban hang
trong van » trong cac
tuan bang » tuan dang, tuan hoang, thuat bang
ban hanh » ban hang
tranh va » tranh van, trang va, trinh va
van tuan » van quan, van ban, anh tuan
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((ban thanh) or (ban hanh)) - canh tranh va dung trong van tuan bang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((ban thanh) OR (ban hanh)) - canh tranh va dung trong van tuan bang.
• Adding a wildcard symbol may retrieve word variants: hoc ((ban thanh) or (ban hanh)) - canh tranh va dung trong van tuan bang*.