Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
hieu vien » hieu hien, hieu viec, thieu nien
va triet » va thiet, va trien, ve triet
cap nuoc » dat nuoc
van hanh » van thanh, ban hanh, van anh
vien cap » vien cac, vien cao, vien can
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach

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 ky nang xa hoi. hieu vien cap nuoc ((van hanh) or (va danh)) le ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu vien cap nuoc ((van hanh) OR (va danh)) le ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu vien cap nuoc ((van hanh) or (va danh)) le ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu vien cap nuoc ((van hanh) or (va danh)) le ((cua triet) OR (va triet))*.