Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
ban thanh » ban hanh, ban hang
dang xay » dang van, van xay
doi cua » dai cua, hoi cua
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, lang van
sai ky » sac ky
tu sai » tu bai, tu san, tu 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 sai ky ((lang xa) OR (dang xay)) hoi. thien ((van lam) or (van nam)) duc ban thanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((lang xa) OR (dang xay)) hoi. thien ((van lam) OR (van nam)) duc ban thanh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((lang xa) OR (dang xay)) hoi. thien ((van lam) or (van nam)) duc ban thanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((lang xa) OR (dang xay)) hoi. thien ((van lam) or (van nam)) duc ban thanh doi cua tre*.