Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
van cam » van nam, van lam, van cau
cam tu » cam thu, nam tu, dam tu
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang o hoi. hieu van cam tu ((va hanh) or (va dan)) ki ((su triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang o hoi. hieu van cam tu ((va hanh) OR (va dan)) ki ((su triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang o hoi. hieu van cam tu ((va hanh) or (va dan)) ki ((su triet) OR (ve triet))*".