Perhaps you should try some spelling variations:
dieu cua » dieu tra
dan dieu » dang dieu, doan dieu, da dieu
sach ly » sach y, sach ty, sach hay
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach hoi
ve cac » va cac, vien cac
duc ca » duc cac, duc va, duc ha
ca dan » cac dan, ca dao
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: vu ((sach ly) or (sach lo)) lang xa hoi. hieu ((va cam) or (ve cac)) duc ca dan dieu cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ly) OR (sach lo)) lang xa hoi. hieu ((va cam) OR (ve cac)) duc ca dan dieu cua tre.
• Adding a wildcard symbol may retrieve word variants: vu ((sach ly) or (sach lo)) lang xa hoi. hieu ((va cam) or (ve cac)) duc ca dan dieu cua tre*.