Perhaps you should try some spelling variations:
dan vat » dang vat, van vat, dan va
dan vai » dan va, dan tai, den vai
sach ky » sach y, sach ty, sach kem
cac tuc » cac toc, cac tu, cac tac
dang xa » dang xay, lang xa, dang ha
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai 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 ((sach ky) OR (sac ky)) dang xa hoi. lieu va cac tuc va ((dan vai) or (dan vat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) dang xa hoi. lieu va cac tuc va ((dan vai) OR (dan vat)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) dang xa hoi. lieu va cac tuc va ((dan vai) or (dan vat)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) dang xa hoi. lieu va cac tuc va ((dan vai) or (dan vat)) cua tre*.