Perhaps you should try some spelling variations:
thi hanh » thi thanh
thanh va » thanh van, thanh ha, thanh ve
hanh va » hang va, hanh vi
cua van » cua ban, cua vat, cua dan
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
thi van » thi lan, thi nang
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay
ty ang » ty xang, ty hang, ty anh

You may be able to get more results by adjusting your search query.

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