Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tinh hai » tinh thai, tinh chat, trinh han
sach ky » sac ky, sach y, sach ty
hai cuu » hai cua, hai chu, hai cuc
va tinh » may tinh
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
ky tang » ky nang, ky dang, kho tang
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky tang ((ma hoi) OR (ma hoa)). hieu ((ve cham) or (vu cham)) xuc va tinh hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky tang ((ma hoi) OR (ma hoa)). hieu ((ve cham) OR (vu cham)) xuc va tinh hai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky tang ((ma hoi) OR (ma hoa)). hieu ((ve cham) or (vu cham)) xuc va tinh hai cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky tang ((ma hoi) OR (ma hoa)). hieu ((ve cham) or (vu cham)) xuc va tinh hai cuu tre*.