Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
sach thu » sach thue, sach thieu, sach tham
xa thanh » va thanh, ha thanh, ta thanh
cua tre » cuu tre, cua triet, dua tren
sach ty » sach y, sach tu, xach tay
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay
nam tu » nam thu, nam thuc
xang x » nang x
cua te » cua tu
x hoi » xa hoi, o hoi, x ho
tu xa » tu xay, tu va, te xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) OR (sach thu)) xang x hoi. hieu va nam tu xa thanh ve ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thu)) xang x hoi. hieu va nam tu xa thanh ve ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach thu)) xang x hoi. hieu va nam tu xa thanh ve ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach thu)) xang x hoi. hieu va nam tu xa thanh ve ((cua tre) or (cua te))*.