Perhaps you should try some spelling variations:
trinh nang » tinh nang, trinh bang, trinh mang
quan trang » quan trong, xuan trang, quang trung
trang kien » trung kien
tinh luong » tinh huong, dinh luong, minh luong
luong luat » truong luat, luong quan, luong cua
nang quan » ban quan, nang suat
kiem soat » kiem toan
kien tra » kiem tra, kien tri, kien truc
luat va » xuat va, luat ve, suat va
va kiem » van kien

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( trinh nang quan trang kien tra ) OR ( tinh luong luat va kiem soat ))~".
• Adding a wildcard symbol may retrieve word variants: (( trinh nang quan trang kien tra ) OR ( tinh luong luat va kiem soat ))*.