Perhaps you should try some spelling variations:
thanh ve » thanh va, thanh vien, thanh van
tu sach » thu sach, su sach, te sach
hanh ve » hanh vi, hanh va, hanh kem
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
mang xa » lang xa, mang may, dang xay
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ((mang xa) or (nang x)) hoi. hieu va cam xuc va ((thanh ve) OR (hanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((mang xa) OR (nang x)) hoi. hieu va cam xuc va ((thanh ve) OR (hanh ve)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((mang xa) or (nang x)) hoi. hieu va cam xuc va ((thanh ve) OR (hanh ve)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((mang xa) or (nang x)) hoi. hieu va cam xuc va ((thanh ve) OR (hanh ve)) cua tre*.