Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
chat luc » chat xuc, chat lua, chat huu
ban hanh » ban hang
nhan luc » nang luc
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
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: vu sach ty nang ma hoi. hieu van ((chat luc) OR (nhan luc)) ((va hanh) or (ban hanh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang ma hoi. hieu van ((chat luc) OR (nhan luc)) ((va hanh) OR (ban hanh)) vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang ma hoi. hieu van ((chat luc) OR (nhan luc)) ((va hanh) or (ban hanh)) vi va triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang ma hoi. hieu van ((chat luc) OR (nhan luc)) ((va hanh) or (ban hanh)) vi va triet*.