Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
cac tuc » cac toc, cac tu, cac tac
cua tre » cuu tre, cua triet, dua tren
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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 ky dang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va thanh hai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va thanh hai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va thanh hai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va thanh hai ((cua tre) or (cua te))*.