Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
vu cham » va cham, vu kham, tu cham
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, ve chim
ky dang » ky nang, ky danh
cuu tre » cua tre, cau tren, cau treo
su hoi » su choi, su hai, lu hoi
xuc va » duc va, tuc va, luc va

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 (doc sach)) ky dang su hoi. hieu ((ve cham) or (vu cham)) xuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (doc sach)) ky dang su hoi. hieu ((ve cham) OR (vu cham)) xuc va hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (doc sach)) ky dang su hoi. hieu ((ve cham) or (vu cham)) xuc va hanh vai cuu tre*.