Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thanh xa » thanh ha, thanh va, thanh ba
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
thuc va » thuc dan, thuc day
ve nam » he nam, va nam, le nam
lam va » nam va, dam va, am va
lam ha » nam ha, dam ha, lam chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thi thanh xa hoi. hieu ve nam ((thuc va) OR (thuc vat)) hanh ((lam va) or (lam ha)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi thanh xa hoi. hieu ve nam ((thuc va) OR (thuc vat)) hanh ((lam va) OR (lam ha)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thi thanh xa hoi. hieu ve nam ((thuc va) OR (thuc vat)) hanh ((lam va) or (lam ha)) triet*".