Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
mang xa » mang may, dang xay, mang cua
lang xa » dang xay, lang van
lang ha » long ha
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu

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 y ((mang xa) or (((lang xa) or (lang ha)))) hoi. hieu ve cam tu va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((mang xa) OR (((lang xa) OR (lang ha)))) hoi. hieu ve cam tu va thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((mang xa) or (((lang xa) or (lang ha)))) hoi. hieu ve cam tu va thanh dai cua tre*.