Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
sach doi » sach hoi, sach moi, sach dao
va thanh » ban thanh, va tinh, le thanh
ve cham » va cham, ve chat, vu cham
sach lo » sach dao, sach hoi, sach moi
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach lo) or (sach doi)) nang x hoi. hieu ve cham tuc ((va thanh) OR (gia thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach lo) OR (sach doi)) nang x hoi. hieu ve cham tuc ((va thanh) OR (gia thanh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach lo) or (sach doi)) nang x hoi. hieu ve cham tuc ((va thanh) OR (gia thanh)) vi cua tre*".