Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
sac ky » sai ky
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va
vi va » vai va, vu va, bi 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 ((sac ky) or (cac ky)) nang ma hoi. hieu ve cham luc va hanh ((vi va) OR (vi van)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang ma hoi. hieu ve cham luc va hanh ((vi va) OR (vi van)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (cac ky)) nang ma hoi. hieu ve cham luc va hanh ((vi va) OR (vi van)) triet*".