Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, va tinh, le thanh
nang xa » nang x, lang xa, nang ma
nam xuc » cam xuc, nam xua, nam thuc
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
de cua » le cua, te cua, dieu 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 ((hanh kem) OR (sac ky)) nang xa hoi. hieu van nam xuc ((va thanh) OR (ban thanh)) de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((hanh kem) or (sac ky)) nang xa hoi. hieu van nam xuc ((va thanh) OR (ban thanh)) de cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((hanh kem) or (sac ky)) nang xa hoi. hieu van nam xuc ((va thanh) OR (ban thanh)) de cua tre*.