Perhaps you should try some spelling variations:
khanh sinh » khang sinh, khanh linh, khanh vinh
sinh cua » manh cua, dinh cuu, sinh va
va khanh » van khanh, va thanh, vu khanh
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
cua tre » cua te, cuu tre, cua triet
van bay » van ban, van bao, van bac
van cay » van cau, van ca, van chat
ve cac » va cac, vien cac
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 ((van cay) OR (van bay)) phoi. hieu ((ve cam) or (ve cac)) duc va khanh sinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly ((van cay) OR (van bay)) phoi. hieu ((ve cam) OR (ve cac)) duc va khanh sinh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly ((van cay) OR (van bay)) phoi. hieu ((ve cam) or (ve cac)) duc va khanh sinh cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ly ((van cay) OR (van bay)) phoi. hieu ((ve cam) or (ve cac)) duc va khanh sinh cua tre*.