Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
duc ban » duc tan, duc van, dua ban
xuc ban » cuc ban, quoc ban, xuat ban
hieu va » lieu va, hieu qua
sach lo » sach dao, sach doi, sach hoi
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
lo nang » ho nang, ly nang, loai nang
cua tuc » cua duc, cua tu, cua thuoc
va dao » ca dao

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

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