Perhaps you should try some spelling variations:
hieu suat » hieu luat, hieu qua
tinh quan » tinh quang, trinh quan, tin quan
quan quan » quan quang, qua quan, quan luan
kiem toan » ke toan, kiem tra
luan cao » juan cao, luan bao, quang cao
quan van » luan van, quan va, quan luan
van kiem » va kiem, van kien, van hieu

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 cao hieu suat ) or ( tinh quan quan van kiem toan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan cao hieu suat ) OR ( tinh quan quan van kiem toan ))*.