Perhaps you should try some spelling variations:
ky dang » ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
luc van » luoc van, luu van, luc va
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
te sai » te tai, te bai, te lai
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ((ky dang) OR (ky nang)) xay hoi. hieu vu cham ((luc van) or (duc van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ((ky dang) OR (ky nang)) xay hoi. hieu vu cham ((luc van) OR (duc van)) hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ((ky dang) OR (ky nang)) xay hoi. hieu vu cham ((luc van) or (duc van)) hanh vi cua tre*".