Perhaps you should try some spelling variations:
dinh vani » dinh vi, dinh lang, dinh rang
dang xay » dang van, van xay
cac loc » cac lop, cac toc, cac hoc
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
loc va » hoc va, luc va
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 xay hoi. hieu ve cac loc va ((dinh vani) or (dinh van)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) dang xay hoi. hieu ve cac loc va ((dinh vani) OR (dinh van)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) dang xay hoi. hieu ve cac loc va ((dinh vani) or (dinh van)) cuu tre*.