Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, duc man
tai cua » thai cua, tai cuc, tri cua
dua ban » dia ban, cua ban, qua ban
qua cau » quan cau, qua cac, qua ca
lang xa » lang ha, dang xay, lang van
sai ky » sac ky

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) or (cac ky)) lang xa hoi. hieu qua cau ((duc ban) or (dua ban)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sai ky) OR (cac ky)) lang xa hoi. hieu qua cau ((duc ban) OR (dua ban)) thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (cac ky)) lang xa hoi. hieu qua cau ((duc ban) or (dua ban)) thanh tai cua tre*.