Perhaps you should try some spelling variations:
tinh quan » tinh quang, trinh quan, tin quan
quan xuan » quang xuan, quan luan, quan quan
hieu soat » hieu suat, hieu hoat, kiem soat
hieu luat » hieu qua
xuan bao » luan bao, xuan dao, xuan hao
ky toan » ke toan, ly toan, huy toan
luan » 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 ky toan ) or ( tinh quan xuan bao ((hieu soat) or (hieu luat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung luan van ky toan ) OR ( tinh quan xuan bao ((hieu soat) OR (hieu luat)) )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung luan van ky toan ) or ( tinh quan xuan bao ((hieu soat) or (hieu luat)) ))*.