Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
vu chat » va chat, ve chat, du chat
lai hoi » dai hoi, lai hoa, mai hoi
lai roi » loi roi
hieu vu » hieu va, hieu ve, hieu su
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
tu ban » thu ban, te ban
xuc va » duc va, tuc va, xac va
ban ky » van ky, dan ky
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: tu ban ky nang ((lai hoi) or (lai roi)). hieu vu chat ((xuc va) OR (luc va)) thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky nang ((lai hoi) OR (lai roi)). hieu vu chat ((xuc va) OR (luc va)) thanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky nang ((lai hoi) or (lai roi)). hieu vu chat ((xuc va) OR (luc va)) thanh vi cua te*".