Perhaps you should try some spelling variations:
thinh dung » trinh dung, tinh dung, thanh dung
mang cong » dang cong, bang cong, hang cong
dung quan » dung quang, dung luan, luong quan
tin mang » tin nang, ninh mang, tien manh
quan dat » quan sat, qua dat, quan dac
cong va » dong va, cong ha, cong tac
va kiem » van kien
dat thi » dat thoi, dan thi, dao thi
thi lan » thi hanh, thi nang, thi lien

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin mang cong va kiem tra ) or ( thinh dung quan dat thi lan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin mang cong va kiem tra ) OR ( thinh dung quan dat thi lan ))*.