Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
hanh dai » hanh tai, hanh dao, vanh dai
xang xa » lang xa, mang xa, ang xa
su cham » su pham, vu cham, qua cham
tu cham » toc cham, thi cham
va hanh » van hanh, va thanh, va danh
y xang » ty xang
soc va » hoc va, loc va, doc va
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (hoc sach)) y xang xa hoi. hieu ((su cham) or (tu cham)) soc va hanh dai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) y xang xa hoi. hieu ((su cham) OR (tu cham)) soc va hanh dai cua cu.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) y xang xa hoi. hieu ((su cham) or (tu cham)) soc va hanh dai cua cu*.