Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va dan » ca dan, va dao, va dau
hoi ve » hoi va, moi ve, noi ve

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 ty nang cao hoi. hieu ve cham luc ((van hanh) or (va dan)) hoi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang cao hoi. hieu ve cham luc ((van hanh) OR (va dan)) hoi ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang cao hoi. hieu ve cham luc ((van hanh) or (va dan)) hoi ve triet*.