Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
tu sach » thu sach, te sach, tu cach
dau xuc » dau xac, dau xua, dau nuoc
vai cua » dai cua, hai cua, lai cua
van anh » tuan anh, van minh
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
v nang » va nang, vu nang, van nang
va dau » va dao

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 va dau xuc ((van anh) OR (van thanh)) vai 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 va dau xuc ((van anh) OR (van thanh)) vai 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 va dau xuc ((van anh) OR (van thanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) v nang xa hoi. hieu va dau xuc ((van anh) OR (van thanh)) vai cua tre*.