Perhaps you should try some spelling variations:
trinh nang » tinh nang, trinh bang, trinh mang
kiem soat » kiem toan
van thieu » van hieu, van tieu, van thien
suat van » suat va, sat van, suat nang
van kiem » va kiem, van kien, van hieu
dung dat » dung va, dung tai
dat van » dao van, dat va, dam van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh nang suat van kiem soat ) or ( tin dung dat van thieu so ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh nang suat van kiem soat ) OR ( tin dung dat van thieu so ))*.