Perhaps you should try some spelling variations:
trinh dang » trinh dung, trinh bang, trinh danh
hieu soat » hieu suat, hieu hoat, hieu luat
trinh dan » trinh han, trinh san, trinh da
cong tuan » cong tan, cong luan, cong thanh
tuan kien » tuan kiet, tuan tien, xuan kien
kien soat » kiem soat, bien soan, kien hoa
van hieu » cao hieu
tin » tinh
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung luan van hieu soat ) or ( ((trinh dang) OR (trinh dan)) cong tuan kien soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan van hieu soat ) OR ( ((trinh dang) OR (trinh dan)) cong tuan kien soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung luan van hieu soat ) or ( ((trinh dang) OR (trinh dan)) cong tuan kien soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan van hieu soat ) or ( ((trinh dang) OR (trinh dan)) cong tuan kien soat ))*.