Perhaps you should try some spelling variations:
trinh luong » trinh duong, trinh huong, trinh xuong
luong quan » thong quan, duong qua
hieu soat » hieu suat, hieu hoat, hieu luat
binh nang » binh dang, tinh nang, binh giang
nang quan » ban quan, nang suat
dien soat » dien hoat, dien hoa, bien soan
kiem soat » kiem toan
quan ban » quang ban, qua ban, quan van
quan va » quan vi, quan ha, luan va
va hieu » van hieu, va dieu, va hien

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh luong quan va hieu soat ) or ( binh nang quan ban ((dien soat) OR (kiem soat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh luong quan va hieu soat ) OR ( binh nang quan ban ((dien soat) OR (kiem soat)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( trinh luong quan va hieu soat ) or ( binh nang quan ban ((dien soat) OR (kiem soat)) ))".
• Adding a wildcard symbol may retrieve word variants: (( trinh luong quan va hieu soat ) or ( binh nang quan ban ((dien soat) OR (kiem soat)) ))*.