Perhaps you should try some spelling variations:
cua triet » su triet, va triet
hieu van » hieu va, thien van, lieu va
van phat » va phat, van chat, van phan
duc manh » suc manh, duc minh, duc tan
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
hanh di » hanh vi, hanh de, hang di
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang xa hoi. hieu van phat ((duc manh) OR (duc anh)) hanh di ((cua triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang xa hoi. hieu van phat ((duc manh) or (duc anh)) hanh di ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang xa hoi. hieu van phat ((duc manh) or (duc anh)) hanh di ((cua triet) OR (cua viet))*.