Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
tinh dung » trinh dung, tin dung, tinh quang
dung quan » dung quang, dung luan, luong quan
hieu soat » hieu suat, hieu hoat, hieu luat
trinh san » trinh han, trinh quan, trinh luan
kiem soat » kiem toan
quan van » luan van, quan va, quan luan
van hieu » cao hieu
quang va » quang van, quan va, quang ma
va kiem » van kien

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

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