Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
thanh lai » thanh hai, thanh lap, thanh tai
sang mai » sang ma, sang tai, lang mai
cham doc » cham soc, chat doc, chau doc
cua tre » cua te, cua triet, dua tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ty sang » ty xang, ty hang, duy sang
cuu tre » cau tren, cau treo
doc va » duoc va, hoc va, duc va

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 ty sang mai hoi. hieu ve cham doc va ((thanh lai) or (thanh loi)) ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty sang mai hoi. hieu ve cham doc va ((thanh lai) OR (thanh loi)) ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach ty sang mai hoi. hieu ve cham doc va ((thanh lai) or (thanh loi)) ((cua tre) or (cuu tre))*.