Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
luc va » tuc va, loc va
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 ly hang xa hoi. hieu van cham ((luc va) or (duc va)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ly hang xa hoi. hieu van cham ((luc va) OR (duc va)) hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: hoc sach ly hang xa hoi. hieu van cham ((luc va) or (duc va)) hanh vi cua tu*.