Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
ky trang » ky trong, ky tang, ky nang
ve triet » su triet
ke trang » ke toan
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
te sac » te sach, te cac, te 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 ((ky trang) or (ke trang)) xa hoi. hieu ve cam xuc va hanh vi ((ve triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky trang) OR (ke trang)) xa hoi. hieu ve cam xuc va hanh vi ((ve triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky trang) or (ke trang)) xa hoi. hieu ve cam xuc va hanh vi ((ve triet) OR (va trien))".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky trang) or (ke trang)) xa hoi. hieu ve cam xuc va hanh vi ((ve triet) OR (va trien))*.