Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau treo
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.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ly nang o hoi. hieu ve chat duc va hanh vi ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang o hoi. hieu ve chat duc va hanh vi ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ly nang o hoi. hieu ve chat duc va hanh vi ((cuu tre) or (cau tren))*.