Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
chau te » chau tho
y nang » ky nang, ly nang, v 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 y nang xa hoi. ((hieu ve) or (hieu van)) cam duc va hanh lai chau te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang xa hoi. ((hieu ve) OR (hieu van)) cam duc va hanh lai chau te.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. ((hieu ve) or (hieu van)) cam duc va hanh lai chau te*.