Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
vu sach » su sach, vu khach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
luc van » luoc van, luu van, duc van
van han » van hanh, van phan, van nhan
han tri » han tai, van tri, thanh tri
thiet » thieu

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) OR (vu bach)) ky ((nang ma) or (nang x)) hoi. hieu ve cham luc van han tri va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky ((nang ma) OR (nang x)) hoi. hieu ve cham luc van han tri va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) ky ((nang ma) or (nang x)) hoi. hieu ve cham luc van han tri va thiet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu bach)) ky ((nang ma) or (nang x)) hoi. hieu ve cham luc van han tri va thiet*.