Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van dinh » van minh, van dich, va dinh
dinh lai » dinh lam, dinh lap, dinh tai
nang xa » nang x, lang xa, nang ma
lai cua » dai cua, hai cua, lai chau
y nang » ky nang, ly nang, v nang
va cao » va cac, va dao, va bao
su van » tu van, vu van
cua te » cua tu
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y nang xa hoi. lieu ((va cao) OR (va co)) su van dinh lai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y nang xa hoi. lieu ((va cao) OR (va co)) su van dinh lai cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang xa hoi. lieu ((va cao) OR (va co)) su van dinh lai cua te*.