Perhaps you should try some spelling variations:
quang phan » quang chan, quang phat, quang thanh
tinh tinh » trinh tinh, tinh ninh, tinh binh
phan kiem » phan kien, phan mem, van kiem
kiem soat » kiem toan
hieu suat » hieu luat, hieu qua
dung van » duong van, dung va, dang van
van hieu » cao hieu
tin ung » tin dung, tinh dung, trinh ung

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh tinh quang phan kiem soat ) or ( tin ung dung van hieu suat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh tinh quang phan kiem soat ) OR ( tin ung dung van hieu suat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh tinh quang phan kiem soat ) or ( tin ung dung van hieu suat ))*.