Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
can ky » van ky, ban ky, tan ky
dan ky » van ky
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((can ky) OR (dan ky)) nang xa hoi. hieu qua cham ((luc va) OR (tuc va)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((can ky) OR (dan ky)) nang xa hoi. hieu qua cham ((luc va) or (tuc va)) hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((can ky) OR (dan ky)) nang xa hoi. hieu qua cham ((luc va) or (tuc va)) hanh vi cua tre*.