Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thien van » thi van
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
xua van » xua va, qua van, cua van
nam xua » nam cua, nam mua, nam qua
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » lang xa, mang xa, ang xa
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 ty ((((nang xa) or (nang x))) or (nang ma)) hoi. thien van nam xua van thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((((nang xa) OR (nang x))) OR (nang ma)) hoi. thien van nam xua van thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((((nang xa) or (nang x))) or (nang ma)) hoi. thien van nam xua van thanh vi cua tre*.