Perhaps you should try some spelling variations:
hieu suat » hieu qua
hieu luat » hieu qua
trinh han » trinh quan
kiem toan » ke toan, kiem tra
van kiem » va kiem, van kien, van hieu
han van » phan van, nhan van, hanh van
van van » van ban, tan van, san van
tin » tinh
luan » quan, lan

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 van ((hieu suat) OR (hieu luat)) ) OR ( trinh han van van kiem toan ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung luan van ((hieu suat) OR (hieu luat)) ) or ( trinh han van van kiem toan ))~".
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan van ((hieu suat) OR (hieu luat)) ) or ( trinh han van van kiem toan ))*.