Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ve cam » ve cham, va cam, ve cai
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
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 sai ky nang o hoi. hieu ((ve cam) or (ve cac)) xuc va hanh vi ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang o hoi. hieu ((ve cam) OR (ve cac)) xuc va hanh vi ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang o hoi. hieu ((ve cam) or (ve cac)) xuc va hanh vi ((cua tre) or (cau tren))*.