Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
hanh vu » hanh vi, hanh tu, hanh ve
hanh va » hang va, hanh vi
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang xa hoi. hieu va cau luc va ((hanh vu) or (hanh va)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. hieu va cau luc va ((hanh vu) OR (hanh va)) va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu va cau luc va ((hanh vu) or (hanh va)) va triet*.