Perhaps you should try some spelling variations:
"tinh quang tran van hien soat" » "tinh quang tuan van hien soat", "tinh quang trung van hien soat", "tinh quang thanh van hien soat", "tinh quang tran van thien hoat", "tinh quang tran van bien soan", "tinh quang tran van hien luat", "tinh quang tran van hieu soat", "tinh quang tran van tien soat"
"tinh dung luan van kiem soat" » "trinh dung luan van kiem soat", "tin dung luan van kiem soat", "tinh huong 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"

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