Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nang xa » nang x, lang xa, nang ma
van cam » van nam, van cau, van dam
van lam » van nam
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
bac va » ban va, bac ha, bao va
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: thuat sach y nang xa hoi. hieu ((van cam) or (van lam)) ((bac va) or (loc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang xa hoi. hieu ((van cam) OR (van lam)) ((bac va) OR (loc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang xa hoi. hieu ((van cam) or (van lam)) ((bac va) or (loc va)) hanh vi cua tre*.