Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
hanh tai » thanh tai, hang tai, han tai
cham duc » pham duc, cham soc, pham duy
sach ty » sach y, sach thu, xach tay
va cham » va chat, va tham
hieu va » lieu va, hieu qua
xang xa » lang xa, mang xa, ang xa
sach tu » sach thu, cach tu, sach uu
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: thu ((sach ty) OR (sach tu)) xang xa hoi. hieu va cham duc tan ((thanh loi) or (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach tu)) xang xa hoi. hieu va cham duc tan ((thanh loi) OR (hanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) OR (sach tu)) xang xa hoi. hieu va cham duc tan ((thanh loi) or (hanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) OR (sach tu)) xang xa hoi. hieu va cham duc tan ((thanh loi) or (hanh tai)) cua tre*.