Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va danh, ban hanh
tai cua » thai cua, tai cuc, tri cua
te sac » te sach, te cac, te san
va dam » van dam, va dao, va dau
dam tu » nam tu, cam tu, tam tu

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

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