Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien coc » nien cong, vien cac, dien cuc
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, ve triet, cua triet
va trien » va truyen, va thiet, va tuyen
nang xa » nang x, lang xa, nang ma
luc van » luoc van, luu van, duc van
te sac » te sach, te cac
te san » te ban, ke san, tu san

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 (te san)) ky nang xa hoi. thieu nien coc luc van hanh vi ((va triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ky nang xa hoi. thieu nien coc luc van hanh vi ((va triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te san)) ky nang xa hoi. thieu nien coc luc van hanh vi ((va triet) or (va trien))".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te san)) ky nang xa hoi. thieu nien coc luc van hanh vi ((va triet) or (va trien))*.