Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thanh di » thanh doi, thanh do, thanh dinh
thanh de » hanh de, thanh ve, thanh do
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
vien da » vien dai, hien dai
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
da tac » va tac, da tai, da tao
tac xa » tuc xa, tac da

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. hieu vien da tac xa ((thanh di) or (thanh de)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu vien da tac xa ((thanh di) OR (thanh de)) su triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu vien da tac xa ((thanh di) or (thanh de)) su triet*.