Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
tu sac » tu sach, tu san, tu bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) OR (tu cac)) ky nang xa hoi. ((hieu van) or (hieu va)) cam duc va hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky nang xa hoi. ((hieu van) OR (hieu va)) cam duc va hanh va su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu cac)) ky nang xa hoi. ((hieu van) or (hieu va)) cam duc va hanh va su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu cac)) ky nang xa hoi. ((hieu van) or (hieu va)) cam duc va hanh va su triet*.