Perhaps you should try some spelling variations:
"tinh khung luan van kiem soat" » "trinh khung luan van kiem soat", "tinh hung luan van kiem soat", "tinh khang luan van kiem soat", "tinh chung luan van kiem soat", "tinh dung luan van kiem soat", "tinh hang luan van kiem soat", "tinh khung luan van kiem toan", "tinh khung luan va kiem soat", "tinh khung luan van kien soat", "tinh khung luan van hieu soat"
"trinh dung quan cao hieu luat" » "trinh dung quang cao hieu luat", "trinh dung luan cao hieu luat", "trinh luong quan cao hieu luat", "trinh dung quan cao hieu qua", "trinh dung quan cau hieu luat", "trinh dung quan ao hieu luat"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("trinh dung quan cao hieu luat") or ("tinh khung luan van kiem soat"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("trinh dung quan cao hieu luat") OR ("tinh khung luan van kiem soat"))*.
• Removing quotes may allow a broader search: (( trinh dung quan cao hieu luat ) or ( tinh khung luan van kiem soat ))*.