Perhaps you should try some spelling variations:
khanh dinh » khanh linh, khanh vinh, hanh dinh
hieu vien » hieu hien, hieu viec, thieu nien
dinh thuc » dinh thuy, dinh chuc, sinh thuc
thuc tien » thuc hien
vien cac » vien bach, vien dai, vien da
va khanh » van khanh, va thanh, vu khanh
sach ty » sach y, sach tu, sach thu
tang xa » trang xa, tang ma, lang xa
cac hoc » cach hoc, cac hop, bac hoc

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 (cac ky)) tang xa hoi. hieu vien cac hoc va khanh dinh thuc tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (cac ky)) tang xa hoi. hieu vien cac hoc va khanh dinh thuc tien.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (cac ky)) tang xa hoi. hieu vien cac hoc va khanh dinh thuc tien*.