Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
quoc ban » quoc bao, quoc lan, quoc quan
su sach » so sach
lai cua » dai cua, hai cua, lai chau
xuc ban » duc ban, cuc ban, xuat ban
hieu ve » hieu va, hieu van
luc loi » duc loi, luc moi, luc doi
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, vu khach
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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) OR (vu sach)) ty nang luc loi. hieu ve cam ((xuc ban) or (quoc ban)) thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty nang luc loi. hieu ve cam ((xuc ban) OR (quoc ban)) thanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty nang luc loi. hieu ve cam ((xuc ban) or (quoc ban)) thanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty nang luc loi. hieu ve cam ((xuc ban) or (quoc ban)) thanh lai cua tre*.