Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
luc bat » suc bat, luc nhat, luat bat
luc ban » duc ban, cuc ban, luc van
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ty sang » ty xang, ty hang, duy sang
lai cua » dai cua, hai cua, lai chau
ma hoi » mai hoi, ma hoa, me hoi

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 ty sang ((ma hoi) or (xa hoi)). hieu va cham ((luc ban) OR (luc bat)) thanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty sang ((ma hoi) OR (xa hoi)). hieu va cham ((luc ban) OR (luc bat)) thanh lai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty sang ((ma hoi) or (xa hoi)). hieu va cham ((luc ban) OR (luc bat)) thanh lai cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ty sang ((ma hoi) or (xa hoi)). hieu va cham ((luc ban) OR (luc bat)) thanh lai cua vat*.