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
lai cuu » lai cua, lai chau, lai cuoc
cao duc » dao duc, cao suc, giao duc
hieu va » hieu qua
sach ky » sac ky, sach ty, sach kem
dai hoi » dai hoc, dai hai, dai moi
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach y)) sang dai hoi. ((hieu va) OR (lieu va)) cao duc va thanh lai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) sang dai hoi. ((hieu va) OR (lieu va)) cao duc va thanh lai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) sang dai hoi. ((hieu va) OR (lieu va)) cao duc va thanh lai cuu tre*".