Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
va hanh » va thanh, va danh, ban hanh
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

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 (thuoc sach)) ky dang xay hoi. lieu va cam xuc ((va hanh) OR (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky dang xay hoi. lieu va cam xuc ((va hanh) OR (van hanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky dang xay hoi. lieu va cam xuc ((va hanh) OR (van hanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky dang xay hoi. lieu va cam xuc ((va hanh) OR (van hanh)) vi cua triet*.