Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
sach doi » sach hoi, sach moi, sach dao
sach ly » sach y, sach lo, sach ty
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
hang xa » hoang xa, hang va, hang ca
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
ve cam » ve cham, va cam, ve cai

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

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