Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
dau tren » dau tien, dat tren, dau tieng
va thanh » gia thanh, ban thanh, va tinh
sau cham » cau cham, sau chan, va cham
hieu sau » hieu su, hieu suat, tieu su
toc sach » hoc sach, doc sach, thuoc sach
dang van » hoang van, hang va
van hoi » van hoa, van hoc, van hoe
su dang » su dung
cua tre » cua te, cuu tre, cua triet
su sach » so sach, vu sach
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (toc sach)) su dang van hoi. hieu sau cham soc va thanh lai ((cua tre) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (toc sach)) su dang van hoi. hieu sau cham soc va thanh lai ((cua tre) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (toc sach)) su dang van hoi. hieu sau cham soc va thanh lai ((cua tre) or (dau tren))*.