Perhaps you should try some spelling variations:
manh hai » lanh hai, minh hai, thanh hai
sach thu » sach thue, sach thieu, sach tham
dang xay » dang van, van xay
xuc ban » duc ban, quoc ban, xuat ban
hai cua » thai cua, dai cua, hoi cua
cuc ban » cua ban, cac ban, cuu ban
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, xach tay
xay hoi » xa hoi, tay hoi, cay phoi
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 ty) or (sach thu)) dang xay hoi. hieu ve cam ((xuc ban) OR (cuc ban)) manh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thu)) dang xay hoi. hieu ve cam ((xuc ban) OR (cuc ban)) manh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach thu)) dang xay hoi. hieu ve cam ((xuc ban) OR (cuc ban)) manh hai cua tre*".