Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
xuc ban » cuc ban, quoc ban, xuat ban
sach lo » sach dao, sach doi, sach hoi
hieu va » lieu va, hieu qua
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
lo nang » ho nang, ly nang, loai nang
cua tuc » cua duc, cua tu, cua thuoc
va cao » va cac, va co, va dao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach lo nang ((mai hoi) OR (lai hoi)). hieu va cao ((xuc ban) or (duc ban)) hanh vi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach lo nang ((mai hoi) OR (lai hoi)). hieu va cao ((xuc ban) OR (duc ban)) hanh vi cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach lo nang ((mai hoi) OR (lai hoi)). hieu va cao ((xuc ban) or (duc ban)) hanh vi cua tuc".
• Adding a wildcard symbol may retrieve word variants: tu sach lo nang ((mai hoi) OR (lai hoi)). hieu va cao ((xuc ban) or (duc ban)) hanh vi cua tuc*.