Perhaps you should try some spelling variations:
thuc dung » thuoc dung, thuy dung, tuc dung
dung hanh » dung thanh, dang hanh, dung danh
lang van » dang van, tang van, hoang van
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
vu san » va san, vu ban
san ky » sang ky, van ky, dan ky
va lam » van lam, va lap
vi cua » vai cua, di cua
cua te » cua tu
va am » va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ky lang van hoi. hieu ((va am) or (va lam)) thuc dung hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky lang van hoi. hieu ((va am) OR (va lam)) thuc dung hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu san ky lang van hoi. hieu ((va am) or (va lam)) thuc dung hanh vi cua te*.