Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
sang dai » sang tai, lang dai, sang mai
tu sach » thu sach, su sach, te sach
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
hieu ve » hieu van
dai hoi » dai hoc, dai hai, dai moi
ky sang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
lai cua » dai cua, hai cua, lai chau
luc va » duc va, tuc va, loc va

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) or (so sach)) ky sang dai hoi. ((hieu ve) or (hieu va)) cam luc va thanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky sang dai hoi. ((hieu ve) OR (hieu va)) cam luc va thanh lai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky sang dai hoi. ((hieu ve) or (hieu va)) cam luc va thanh lai cua vat*.