Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
van lam » van nam
van cam » van nam, van cau, van dam
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc 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: ((tu sach) OR (su sach)) v nang xa hoi. hieu ((van cam) or (van lam)) xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) v nang xa hoi. hieu ((van cam) OR (van lam)) xuc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) v nang xa hoi. hieu ((van cam) or (van lam)) xuc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) v nang xa hoi. hieu ((van cam) or (van lam)) xuc va hanh vi cua tre*.