Perhaps you should try some spelling variations:
dang hanh » dang thanh, ban hanh, dang van
thuc dang » thuoc dang, thuc dan, thuc dung
lang van » dang van, tang van, hoang van
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va
vu van » tu van
vi cua » vai cua, di 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: vu van ky lang van hoi. ((hieu va) or (hieu qua)) am thuc dang hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu van ky lang van hoi. ((hieu va) OR (hieu qua)) am thuc dang hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu van ky lang van hoi. ((hieu va) or (hieu qua)) am thuc dang hanh vi cua te*.