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
dan cau » danh cau, dan ca, dat cau
thuc ca » thuc cua, thuc can, thuc cao
vu cham » va cham, vu kham, tu cham
vu nham » vu kham, sua nham
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
cua tre » cua te, cuu tre, cua triet
ca dan » cac dan, ca dao

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