Perhaps you should try some spelling variations:
thanh xa » thanh ha, thanh va, thanh ba
su sach » vu sach
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
ve am » va am

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) or (so sach)) thi thanh xa hoi. hieu ve am thuc va danh ((vai cua) OR (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) thi thanh xa hoi. hieu ve am thuc va danh ((vai cua) OR (hai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) thi thanh xa hoi. hieu ve am thuc va danh ((vai cua) OR (hai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) thi thanh xa hoi. hieu ve am thuc va danh ((vai cua) OR (hai cua)) triet*.