Perhaps you should try some spelling variations:
khanh dinh » khanh linh, khanh vinh, hanh dinh
dinh chuc » dinh chi, dinh thuy, dinh cuu
hieu vien » hieu hien, hieu viec, thieu nien
chuc tre » thuc tre, chuc theo, thuc te
va khanh » van khanh, va thanh, vu khanh
vien cac » vien bach, vien dai, vien da
tang xa » trang xa, tang ma, lang xa
sach ty » sach y, sach tu, sach thu
sac ky » cac ky

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) or (((sac ky) OR (sai ky)))) tang xa hoi. hieu vien cac hop va khanh dinh chuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (((sac ky) OR (sai ky)))) tang xa hoi. hieu vien cac hop va khanh dinh chuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (((sac ky) OR (sai ky)))) tang xa hoi. hieu vien cac hop va khanh dinh chuc tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (((sac ky) OR (sai ky)))) tang xa hoi. hieu vien cac hop va khanh dinh chuc tre*.