Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
huu tre » cuu tre, huu them, huu tien
va hanh » va thanh, va danh, ban hanh
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
huu tri » huu tai
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: te sach ky nang o hoi. hieu va chat xuc ((va hanh) OR (van hanh)) dai ((huu tre) or (huu tri))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang o hoi. hieu va chat xuc ((va hanh) OR (van hanh)) dai ((huu tre) OR (huu tri))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang o hoi. hieu va chat xuc ((va hanh) OR (van hanh)) dai ((huu tre) or (huu tri))*".