کمک در مورد سئو

[lakers320]

با سلام بر دوستان عزیز
من تمام پست هایی که در مورد سئو بود را خوندم وانجام دادم ولی باز هم با چندین ارور مواجه شدم لطفا راهنمایی ام کنید؟؟؟

ارور ها را هم میگذارم ببینید:
ارور اول
Not Found

The requested URL /1390-07-04-09-02-54/34-1390-07-03-08-54-27/46-defa.html was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2 Server at empratoor.net Port 80

ارور دوم

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@empratoor.net and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2 Server at empratoor.net Port 80