Perhaps you should try some spelling variations:
thi nang » thi cong, ki nang, thi hanh
danh vi » hanh vi, dinh vi, danh di
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
cac lap » cac lop, cac cap, cac tap
cua te » cua tu
lap va » tap va
vi cua » vai cua, di cua
va xac » va cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((va xay) OR (va xac)) hoi. ((hieu ve) OR (thi nang)) cac lap va danh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((va xay) or (va xac)) hoi. ((hieu ve) or (thi nang)) cac lap va danh vi cua te*.