Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
xuc ban » cuc ban, quoc ban, xuat ban
duc ban » duc tan, duc van, dua ban
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
me hoi » le hoi
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: te sach ky nang ((me hoi) or (ma hoa)). hieu ve cam ((xuc ban) OR (duc ban)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((me hoi) OR (ma hoa)). hieu ve cam ((xuc ban) OR (duc ban)) hanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((me hoi) or (ma hoa)). hieu ve cam ((xuc ban) OR (duc ban)) hanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((me hoi) or (ma hoa)). hieu ve cam ((xuc ban) OR (duc ban)) hanh hai cua tre*.