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