Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, te sach, tu cach
cua tre » cua te, cua triet, dua tren
cao duc » dao duc, cao suc, giao duc
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
su sach » so sach, vu sach
ve cao » va cao, ve bao, ve cac

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)) ty lang xa hoi. hieu ve cao duc va thanh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty lang xa hoi. hieu ve cao duc va thanh lai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty lang xa hoi. hieu ve cao duc va thanh lai ((cua tre) or (cuu tre))*.