Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thanh tai » thanh hai, doanh tai, thanh san
sach tu » sach thu, sach ty, sach uu
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
cach tu » cach thuc
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) OR (thanh toan)) 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) OR (thanh toan)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) or (cach tu)) lang xa hoi. hieu va co toc xa ((thanh tai) OR (thanh toan)) 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) OR (thanh toan)) cua tre*.