Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, lang van
va cao » va cac, va co, va dao
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cai

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 ky ((lang xa) or (dang xay)) hoi. lieu ((va cam) OR (va cao)) tuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (dang xay)) hoi. lieu ((va cam) OR (va cao)) tuc va hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((lang xa) or (dang xay)) hoi. lieu ((va cam) OR (va cao)) tuc va hanh dai cua tre*".