Perhaps you should try some spelling variations:
trinh phuong » trinh duong, trinh dung, trinh cong
phuong quan » phuong quang, phuong quynh, thuong quang
minh truong » minh tuong, sinh truong, minh thuong
truong luan » truong quan, truong luat, truong quang
hieu soat » hieu suat, hieu hoat, kiem soat
hieu luat » hieu qua
quan van » quan va, quan luan, quan doan
de toan » ke toan, de hoan, de ton

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh phuong quan van de toan ) or ( minh truong luan van ((hieu soat) OR (hieu luat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh phuong quan van de toan ) OR ( minh truong luan van ((hieu soat) OR (hieu luat)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( trinh phuong quan van de toan ) or ( minh truong luan van ((hieu soat) OR (hieu luat)) ))".
• Adding a wildcard symbol may retrieve word variants: (( trinh phuong quan van de toan ) or ( minh truong luan van ((hieu soat) OR (hieu luat)) ))*.