Perhaps you should try some spelling variations:
nam truoc » nam thuoc, lam truoc, nam truong
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
nam truc » nam thuc, nam trung, nam thuoc
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
so sach » so sanh, bo sach, co sach
lai va » loai va, mai va, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ((o lai) OR (o lao)). lieu va ((nam truoc) or (nam truc)) va thanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ((o lai) OR (o lao)). lieu va ((nam truoc) OR (nam truc)) va thanh lai va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ((o lai) OR (o lao)). lieu va ((nam truoc) or (nam truc)) va thanh lai va triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((o lai) OR (o lao)). lieu va ((nam truoc) or (nam truc)) va thanh lai va triet*.