Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
sach tai » sach bai, sach tham, sach dao
sach thi » sach thu, sach thieu, sach tham
xuc ban » duc ban, cuc ban, quoc ban
cac xuc » cam xuc, cac nuoc, chat xuc
lai hoa » dai hoa, loai hoc
hieu ve » hieu va
hang ca » hang va, nang cao, hang tai
ca hoi » cau hoi, cua hoi, xa hoi

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 thi) or (sach tai)) hang ca hoi. ((hieu ve) OR (hieu van)) cac xuc ban thanh lai hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thi) OR (sach tai)) hang ca hoi. ((hieu ve) OR (hieu van)) cac xuc ban thanh lai hoa viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thi) or (sach tai)) hang ca hoi. ((hieu ve) OR (hieu van)) cac xuc ban thanh lai hoa viet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thi) or (sach tai)) hang ca hoi. ((hieu ve) OR (hieu van)) cac xuc ban thanh lai hoa viet*.