Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cham xuc » cam xuc, chat xuc, cham soc
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
hieu va » lieu va, hieu qua
te sach » toc sach
nang co » nang cao, nang doc, nang noi
vu sach » vu bach, su sach, vu khach
va cham » va chat, va tham
co hoi » co hoc, co loi
dai va » mai va

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) or (vu sach)) ky nang co hoi. hieu va cham xuc ((va danh) OR (va dinh)) dai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu sach)) ky nang co hoi. hieu va cham xuc ((va danh) OR (va dinh)) dai va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (vu sach)) ky nang co hoi. hieu va cham xuc ((va danh) OR (va dinh)) dai va triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu sach)) ky nang co hoi. hieu va cham xuc ((va danh) OR (va dinh)) dai va triet*.