Perhaps you should try some spelling variations:
nhan luc » nang luc
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
sach v » sach va, sach 2, sach vay
nang o » nang co, nang ho, nang ro
luc va » duc va, tuc va, loc va
o hoc » co hoc, mo hoc, so hoc
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach v) OR (sach y)) nang o hoc. hieu va nhan luc va tinh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) OR (sach y)) nang o hoc. hieu va nhan luc va tinh vi va triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) OR (sach y)) nang o hoc. hieu va nhan luc va tinh vi va triet*.