Perhaps you should try some spelling variations:
dang xay » dang van, van xay
sach ky » sac ky, sach y, sach ty
hai van » thai van, ha van, hai tan
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
cau tuc » cau tu, cau luc, cau phuc
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
hai va » thai va, hoi va, mai va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang xay hoi. hieu qua ((cau tuc) OR (cau truc)) va hanh ((hai va) OR (hai van)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky dang xay hoi. hieu qua ((cau tuc) or (cau truc)) va hanh ((hai va) OR (hai van)) triet~".
• Adding a wildcard symbol may retrieve word variants: so sach ky dang xay hoi. hieu qua ((cau tuc) or (cau truc)) va hanh ((hai va) OR (hai van)) triet*.