Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
thu sach » thuat sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
tu sach » su sach, te sach, tu cach
du chat » duoc chat, dung chat, doc chat
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu cua
o hoi » co hoi, o hoc, o hai

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 (thu sach)) ky nang o hoi. hieu ((va chat) or (du chat)) luc va thanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang o hoi. hieu ((va chat) OR (du chat)) luc va thanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang o hoi. hieu ((va chat) or (du chat)) luc va thanh de cua tre*.