Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
tu sach » thu sach, te sach, tu cach
thi van » thi lan, thi hanh, thi nang
duc ban » duc tan, duc van, dua ban
lam duc » lam duoc, pham duc, nam duoc
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang
su sach » so sach, vu sach

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)) va nang xa hoi. ((lieu va) or (thi van)) lam duc ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) va nang xa hoi. ((lieu va) OR (thi van)) lam duc ban thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) va nang xa hoi. ((lieu va) or (thi van)) lam duc ban thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) va nang xa hoi. ((lieu va) or (thi van)) lam duc ban thanh dai cua tre*.