Perhaps you should try some spelling variations:
trinh trang » tinh trang, trinh trong, trinh trung
trang luan » tang luan, tranh luan, trang tuan
dung quan » dung quang, dung luan, luong quan
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
quan su » quan cua
su hieu » su hien, su tieu, su bieu
luan va » luan van, luat va
va kiem » van kien
tin » tinh

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: "(( tin dung quan su hieu soat ) OR ( trinh trang luan va kiem soat ))~".
• Adding a wildcard symbol may retrieve word variants: (( tin dung quan su hieu soat ) OR ( trinh trang luan va kiem soat ))*.