Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cach ky » cac ky
hieu va » lieu va, hieu qua
cao luc » bao luc, cao duc, cao suc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, dua tren, cua thep
cuu tre » cau tren, cau treo
nang o » nang co, nang ho, nang ro
va cao » va cac, va co, va dao
luc va » duc va, tuc va, loc va
o hoi » co hoi, o hoc, o hai
cuoc » quoc, duoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: cuoc cach ky nang o hoi. hieu va cao luc va hanh vi ((((cua tre) or (cua triet))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cuoc cach ky nang o hoi. hieu va cao luc va hanh vi ((((cua tre) OR (cua triet))) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: cuoc cach ky nang o hoi. hieu va cao luc va hanh vi ((((cua tre) or (cua triet))) or (cuu tre))*.