Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va gianh » va gian, van giang, va giai
dang tay » dang xay, dung tay, dan tay
cham duc » pham duc, cham soc, pham duy
vu cham » va cham, vu kham, tu cham
lai cua » hai cua, lai chau, thai cua
hieu vu » hieu va, hieu ve, hieu su
tay hoi » tay ho, tao hoi, tay thai
ky dang » ky nang, ky danh

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) OR (toc sach)) ky dang tay hoi. hieu vu cham duc va gianh ((lai cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky dang tay hoi. hieu vu cham duc va gianh ((lai cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky dang tay hoi. hieu vu cham duc va gianh ((lai cua) or (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky dang tay hoi. hieu vu cham duc va gianh ((lai cua) or (dai cua)) te*.