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

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) OR (hien dai)) tac xa ((thanh di) or (thanh de)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ((vien da) OR (hien dai)) tac xa ((thanh di) OR (thanh de)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ((vien da) OR (hien dai)) tac xa ((thanh di) or (thanh de)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ((vien da) OR (hien dai)) tac xa ((thanh di) or (thanh de)) cua triet*.