Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
lai cua » dai cua, hai cua, lai chau
va cao » va cac, va dao, va bao
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 ty nang xa hoi. lieu ((va cao) or (va co)) su ((xuan dinh) or (va dinh)) lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty nang xa hoi. lieu ((va cao) OR (va co)) su ((xuan dinh) OR (va dinh)) lai cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach ty nang xa hoi. lieu ((va cao) or (va co)) su ((xuan dinh) or (va dinh)) lai cua te*.