Perhaps you should try some spelling variations:
"tinh dung luan van kiem soat" » "trinh dung luan van kiem soat", "tin dung luan van kiem soat", "tinh quang luan van kiem soat", "tinh dung luan van kiem toan", "tinh dung luan va kiem soat", "tinh dung luan van kien soat", "tinh dung luan van hieu soat", "tinh dung quan van kiem soat", "tinh dung lan van kiem soat"
"tinh dan dung va bien soan" » "tinh dan dung va bien so", "trinh dan dung va bien soan", "tinh da dung va bien soan", "binh dan dung va bien soan", "tinh van dung va bien soan", "tinh tin dung va bien soan", "tinh ap dung va bien soan", "tinh dan dung vat bien soan", "tinh dan dung va lien soan", "tinh dan dung va dien 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 van kiem soat") or ("tinh dan dung va bien soan"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tinh dung luan van kiem soat") OR ("tinh dan dung va bien soan")).
• Removing quotes may allow a broader search: (( tinh dung luan van kiem soat ) or ( tinh dan dung va bien soan )).
• Adding a wildcard symbol may retrieve word variants: (("tinh dung luan van kiem soat") or ("tinh dan dung va bien soan"))*.