Perhaps you should try some spelling variations:
lam truoc » lam thuoc, nam truoc, lam truong
dong xay » dang xay, cong xay, mong xay
truoc va » truc va, thuoc va, truong va
hanh dai » hanh tai, hanh dao, vanh dai
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
xay hoi » xa hoi, tay hoi, cay phoi
hieu da » hieu dac, hieu dia, hieu va
va hanh » van hanh, va thanh, va danh
da lam » va lam
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: ((so sach) or (so sanh)) van dong xay hoi. hieu da lam truoc va hanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) van dong xay hoi. hieu da lam truoc va hanh dai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) van dong xay hoi. hieu da lam truoc va hanh dai cua tu*.