Perhaps you should try some spelling variations:
"tinh dung luan va kiem soat" » "trinh dung luan va kiem soat", "tin dung luan va kiem soat", "tinh quang luan va kiem soat", "tinh dung luan va kiem toan", "tinh dung luan van kiem soat", "tinh dung luat va kiem soat", "tinh dung luan van kien soat"
"tinh dung dan van bien soan" » "trinh dung dan van bien soan", "tin dung dan van bien soan", "tinh quang dan van bien soan", "tinh dung dan van bien so", "tinh dung dat van bien soan", "tinh dung san van bien soan", "tinh tung dan van bien soan", "tinh dung dan van tien soan", "tinh dung dan van hien soan", "tinh dung dan vat bien soan", "tinh dung dang van bien soan", "tinh dung doan van bien soan", "tinh dung dao van bien soan"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("tinh dung luan va kiem soat") or ("tinh dung dan van bien soan"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tinh dung luan va kiem soat") OR ("tinh dung dan van bien soan")).
• Removing quotes may allow a broader search: (( tinh dung luan va kiem soat ) or ( tinh dung dan van bien soan )).
• Adding a wildcard symbol may retrieve word variants: (("tinh dung luan va kiem soat") or ("tinh dung dan van bien soan"))*.