Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham xuc » cam xuc, chat xuc, cham soc
tinh hai » tinh thai, tinh chat, trinh han
tinh vai » tinh va, tinh bai, tinh lai
xuc may » xuc hay, truc may, phuc may
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet

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

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