Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
duong va » duong van, dung va, luong va
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
ha hoi » hoa hoi, ha noi, xa hoi
loc va » hoc va, luc va
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 cac ky lang ha hoi. hieu qua cham ((loc va) or (((duong va) or (duc va)))) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky lang ha hoi. hieu qua cham ((loc va) OR (((duong va) OR (duc va)))) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky lang ha hoi. hieu qua cham ((loc va) or (((duong va) or (duc va)))) hanh vi cua tre*.