You don't tell what it exactly is you're looking for [Status/Credit etc]. Batch 9528 is from about 4-5 days ago, so if it was completed longer than about 24 hours ago it will no longer be listed.

It's a guess, but look in the event log or stdoutdae.txt file and trace the start upload / finished upload for these tasks and any other result related messages.

Still got one 9526 listed that was validated 11:30 on the 15th i.e. 24 hours have passed and has as yet not migrated off, so it would be odd to report and not be listed the next minute.

As for logging, got the extra sched_op log flag set so also get a server confirmation back of good receipt, per result, to stop any worries of good arrival. Example:

7532 World Community Grid 3/16/2015 11:56:11 AM Sending scheduler request: To report completed tasks.
7533 World Community Grid 3/16/2015 11:56:11 AM Reporting 1 completed tasks
7539 World Community Grid 3/16/2015 11:56:15 AM [sched_op] handle_scheduler_reply(): got ack for task OET1_0000428_xZAGP-F_rig_19903_0

First you said

I made also filtering by hostname and application (2 pages of results)
also after uploading this complete task I cannot find it.

then

"I opened Results status page and filtered by hostname and application name. all mentioned were in progress."

You're saying to me they were listed, now you say they were not, to me maybe lost in translation

What's your logs though show. [Post all lines related to these tasks].

Don't know. Convert your local log times to UTC times as shown on the RS pages, then hit the Return Time link to sort them from newest to oldest completed/reported. Do -not- filter anything and parse the pages from start. Maybe there's a confusion in the system which task was done with what device. Given that duplicate host names are possible, not trusting filtering by name too much [I'm suppressing host names and thus get the RS pages listed with the unique device numeric IDs.]

It's very hard with all the result checks in the BOINC system to loose anything. That said, another member reported missing tasks/results running his XML exports, but showing on the RS pages. Why that could be is not clear to me other than the 'liveness' of the RS pages. The turnover is 1.5 to 2 million a day, so maybe so index is not as fresh as it should be.

BTW, if a task were pulled from distribution before completing, there'd be a 'server aborted' instruction going to the client. You seem to be manually controlling uploads i.e. crunch offline... do you? Then the abort message might get lost. At any rate there's a scenario where you could be running tasks that are no longer useable, but it's an outside normal scenario.