Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
thi cong » tai cong, thien cong
nam duoc » nam thuoc, da duoc, dat duoc
duoc ban » duc ban, quoc ban, buoc ban
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa

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 v nang ma hoi. ((lieu va) or (thi cong)) nam duoc ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang ma hoi. ((lieu va) OR (thi cong)) nam duoc ban thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ma hoi. ((lieu va) or (thi cong)) nam duoc ban thanh dai cua tre*.