Perhaps you should try some spelling variations:
te sach » toc sach
vu cham » va cham, vu kham, tu cham
cau cua » cau qua, ca cua, cu cua
dau cua » dai cua, day cua, dan cua
thuc ca » thuc cua, thuc can, thuc cao
sach ty » sach y, sach tu, sach thu
vu nham » vu kham, sua nham
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ca dan » cac 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 ty nang ma hoi. hieu ((vu nham) or (vu cham)) thuc ca dan ((dau cua) OR (cau cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ma hoi. hieu ((vu nham) OR (vu cham)) thuc ca dan ((dau cua) OR (cau cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang ma hoi. hieu ((vu nham) or (vu cham)) thuc ca dan ((dau cua) OR (cau cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ma hoi. hieu ((vu nham) or (vu cham)) thuc ca dan ((dau cua) OR (cau cua)) tre*.