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 lam van bien soan" » "trinh dung lam van bien soan", "tin dung lam van bien soan", "tinh quang lam van bien soan", "tinh dung lam van bien so", "tinh dung tai van bien soan", "tinh dung dat van bien soan", "tinh dung ha van bien soan", "tinh dung lam van tien soan", "tinh dung lam van hien soan", "tinh dung lam vat bien soan", "tinh dung lam san bien soan", "tinh dung nam van bien soan", "tinh dung dam 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 lam 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 lam van bien soan")).
• Removing quotes may allow a broader search: (( tinh dung luan va kiem soat ) or ( tinh dung lam van bien soan )).
• Adding a wildcard symbol may retrieve word variants: (("tinh dung luan va kiem soat") or ("tinh dung lam van bien soan"))*.