Perhaps you should try some spelling variations:
ve triet » su triet
hieu van » hieu va, thien van, lieu va
va trien » va truyen, va thiet, va tuyen
va thanh » gia thanh, ban thanh, le thanh
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
tu sach » thu sach, su sach, te sach
nang o » nang co, nang ho, nang ro
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang o hoc. hieu van cau xuc ((va thanh) OR (va tinh)) tai ((va trien) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o hoc. hieu van cau xuc ((va thanh) OR (va tinh)) tai ((va trien) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang o hoc. hieu van cau xuc ((va thanh) OR (va tinh)) tai ((va trien) or (ve triet))*".