Perhaps you should try some spelling variations:
trinh trang » tinh trang, trinh trong, trinh trung
trang luan » tang luan, tranh luan, trang tuan
hieu soat » hieu suat, hieu hoat, hieu so
hieu luat » hieu qua
kiem soat » kiem toan
luan su » quan su, luat su, luan san
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan su ((hieu soat) OR (hieu luat)) ) OR ( trinh trang luan va kiem soat ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung luan su ((hieu soat) OR (hieu luat)) ) or ( trinh trang luan va kiem soat ))~".
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan su ((hieu soat) OR (hieu luat)) ) or ( trinh trang luan va kiem soat ))*.