Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
xa thanh » va thanh, ha thanh, ta thanh
sach tu » sach thu, sach ty, sach uu
cach tu » cach thuc
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
co toc » cao toc, co hoc, co doc
toc xa » tuc xa, toc ta, hoc xa
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach tu) or (cach tu)) lang xa hoi. hieu va co toc xa thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (cach tu)) lang xa hoi. hieu va co toc xa thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (cach tu)) lang xa hoi. hieu va co toc xa thanh tai cua tre*.