Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cau cua » cau qua, ca cua, cu cua
vu cham » va cham, vu kham, tu cham
vu nham » vu kham, sua nham
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ca dan » ca dao
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. hieu ((vu nham) or (vu cham)) thuc ((ca dan) OR (cac dan)) cau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu ((vu nham) OR (vu cham)) thuc ((ca dan) OR (cac dan)) cau cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu ((vu nham) or (vu cham)) thuc ((ca dan) OR (cac dan)) cau cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ((vu nham) or (vu cham)) thuc ((ca dan) OR (cac dan)) cau cua tre*.