Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, va cam
sac ky » sai ky
mo hoc » mon hoc, co hoc
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 ((sac ky) or (cac ky)) nang ((o hoi) or (mo hoc)). hieu ve cam luc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang ((o hoi) OR (mo hoc)). hieu ve cam luc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) nang ((o hoi) or (mo hoc)). hieu ve cam luc va hanh vi cua triet*.