Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
tu tieng » luc tieng, tu tuong, tu trong
hang xa » hoang xa, hang va, hang ca
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
va dinh » van dinh, va kinh, va tinh
dinh vi » dinh ve, dinh viet, dinh tri
su tien » su kien, su hien, dau tien
va cham » va chat, va tham
va cam » va cac, va cao, va cai
xuc va » duc va, tuc va, luc va

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 ((va cam) OR (va cham)) xuc va dinh vi ((su tien) or (tu tieng))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ly hang xa hoi. hieu ((va cam) OR (va cham)) xuc va dinh vi ((su tien) OR (tu tieng)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ly hang xa hoi. hieu ((va cam) OR (va cham)) xuc va dinh vi ((su tien) or (tu tieng))".
• Adding a wildcard symbol may retrieve word variants: hoc sach ly hang xa hoi. hieu ((va cam) OR (va cham)) xuc va dinh vi ((su tien) or (tu tieng))*.