Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
nam truoc » nam thuoc, lam truoc, nam truong
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
nam truc » nam thuc, nam trung, nam thuoc
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
nang o » nang co, nang ho, nang ro
lai va » loai va, mai va, dai va
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) OR (sach ty)) nang o lai. 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: su ((sach ky) OR (sach ty)) nang o lai. 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: "su ((sach ky) OR (sach ty)) nang o lai. lieu va ((nam truoc) or (nam truc)) va thanh lai va triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sach ty)) nang o lai. lieu va ((nam truoc) or (nam truc)) va thanh lai va triet*.