Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
hanh vu » hanh vi, hanh tu, hanh ve
hanh va » hang va, hanh vi
vu khac » vu kham, vu khanh, bui khac
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
nang ma » tang ma, sang ma, nang cao
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
ve cau » ke cau, va cau, ve cac
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac y nang ma hoi. hieu ve cau luc va ((hanh vu) or (hanh va)) ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac y nang ma hoi. hieu ve cau luc va ((hanh vu) OR (hanh va)) ((va triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khac y nang ma hoi. hieu ve cau luc va ((hanh vu) or (hanh va)) ((va triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: vu khac y nang ma hoi. hieu ve cau luc va ((hanh vu) or (hanh va)) ((va triet) OR (ve triet))*.