Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
nhan luc » nang luc
hieu su » hieu sau, tieu su, hieu so
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
hieu vu » hieu va, hieu ve, dieu vu
nang xa » lang xa, nang ma, mang xa
luc va » duc va, tuc va, loc va
lai va » loai va, mai va, dai va

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 y ((nang xa) or (nang x)) hoi. ((hieu vu) OR (hieu su)) nhan luc va hanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (nang x)) hoi. ((hieu vu) OR (hieu su)) nhan luc va hanh lai va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) or (nang x)) hoi. ((hieu vu) OR (hieu su)) nhan luc va hanh lai va triet".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (nang x)) hoi. ((hieu vu) OR (hieu su)) nhan luc va hanh lai va triet*.