Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
dung tren » dung trong, dung trung
va thanh » gia thanh, ban thanh, va tinh
qua cham » qua hai, qua cac, va cham
cua tre » cua te, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
cuu tre » cau tren, cau treo
ty nang » ky nang, ty xang, ty hang
soc va » hoc va, loc va, doc va
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang o hoi. hieu qua cham soc va thanh lai ((((cua tre) OR (dung tren))) OR (cuu tre))~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang o hoi. hieu qua cham soc va thanh lai ((((cua tre) or (dung tren))) or (cuu tre))*.