Perhaps you should try some spelling variations:
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
hieu tu » chieu tu, hieu tuc, hien tu
tu nhan » tue nhan, cu nhan, tu ngan
luc van » luoc van, luu van, duc van
y nang » ky nang, v nang, may nang
vi su » va su, ve su, ki su

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 ((y nang) OR (ly nang)) xa hoi. hieu tu nhan luc van hanh vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) OR (ly nang)) xa hoi. hieu tu nhan luc van hanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) OR (ly nang)) xa hoi. hieu tu nhan luc van hanh vi su triet*.