Perhaps you should try some spelling variations:
tinh tinh » trinh tinh, tinh ninh, tinh binh
quang dan » quang dang, quang doan, quang ban
kiem soat » kiem toan
hieu luat » hieu qua
dan kiem » van kiem, toan kiem, phan kiem
dung ung » dung cong
van hieu » cao hieu
ung van » dung van, vung van, cung van

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 dan kiem soat ) or ( tin dung ung van hieu luat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh tinh quang dan kiem soat ) OR ( tin dung ung van hieu luat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh tinh quang dan kiem soat ) or ( tin dung ung van hieu luat ))*.