Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu hang » thi hang, thu huong, thu trang
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
van lam » van nam
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hang) OR (thuc hanh)) ky nang x ho. hieu van lam duoc ((va hanh) or (ban thanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hang) OR (thuc hanh)) ky nang x ho. hieu van lam duoc ((va hanh) OR (ban thanh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu hang) OR (thuc hanh)) ky nang x ho. hieu van lam duoc ((va hanh) or (ban thanh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu hang) OR (thuc hanh)) ky nang x ho. hieu van lam duoc ((va hanh) or (ban thanh)) vai cua te*.