Perhaps you should try some spelling variations:
"tin dung luan doan kien soat" » "tin dung luan hoan kien soat", "tin dung quan doan kien soat", "tin dung luat doanh kien soat", "tin dung luan doan dien soat", "tin dung luan don kien soat", "tin dung luan doan thien soat", "tin dung luan doan bien soan", "tin dung luan doan kien hoa", "tin dung luan doan dien hoat"
"tinh dung quan va kiem soat" » "trinh dung quan va kiem soat", "tinh quang quan va kiem soat", "tinh huong quan va kiem soat", "tinh dung quang va kiem soat", "tinh luong quan va kiem soat", "tinh dang quang va kiem soat", "tinh dung quan va kiem toan", "tinh dung quan vi kiem soat", "tinh dung quan ha kiem soat", "tinh dung luan va kiem soat", "tinh dung quan van kien soat"

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: (("tin dung luan doan kien soat") or ("tinh dung quan va kiem soat"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tin dung luan doan kien soat") OR ("tinh dung quan va kiem soat")).
• Removing quotes may allow a broader search: (( tin dung luan doan kien soat ) or ( tinh dung quan va kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (("tin dung luan doan kien soat") or ("tinh dung quan va kiem soat"))*.