Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
nhan luc » nang luc
van hanh » ban hanh, van ban, van minh
van anh » tuan anh, van minh
su sach » so sach, vu sach
sach vu » sach va, sach tu, sach uu
cu nhan » ca nhan
hieu cu » hieu cua, hieu ca, hieu su
nang ma » tang ma, sang ma, nang cao
vu nang » vuc nang, va nang, vu dang
ve su » va su

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

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