Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » va thanh, va danh, ban hanh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach v nang xa hoi. hieu ve cham xuc ((va hanh) or (van hanh)) lai ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. hieu ve cham xuc ((va hanh) OR (van hanh)) lai ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. hieu ve cham xuc ((va hanh) or (van hanh)) lai ((cua tre) or (cua viet))*.