Yandex: etext in REFERER. How to find out the search query (is there an API)?

Question

Search Engine Optimization

Greetings, comrades!
Question about monitoring conversions from Yandex.
The REFERER line contains an analogue of the example:

http://yandex.ru/clck/jsredir?from=yandex.ru%3Bsearch%3Bweb%3B%3B&text=&etext=1438.OlrqVc9Fa40PcMbKoQquGrK1uiWUUbpu1lDiu3UauFI.c59594ff36c63ba1e847d8952cab8c2d09b38ebb&uuid=&state=_BLhILn4SxNIvvL0W45KSic66uCIg23qh8iRG98qeIXmeppkgUc0YG-XUIUpxKrkaoPisARVvB8&data=UlNrNmk5WktYejR0eWJFYk1LdmtxcnNrb0pmU2w5TXVBRVNNMndJbV81c05tOXhoOEQ4OTRtamU1VlNmZHhOSWhvTFhDb2UzYmk4M3BOeDJkSXN1N244cnFORHc4bkpC&b64e=2&sign=5136c3a9ded8db37e5c2f979257675e4&keyno=0&cst=AiuY0DBWFJ7IXge4WdYJQaYgAYq7JarrtqdrTXhVLydDLKdUdJQ68KH3ahnp1yDUITqPqrWDgKlA8eeiA_jU8y7L6OSkmtVrD9wlt5nVfXsioiAkd6FPskXy9CfzqCfmMxXNHUGdt70qnD0zvoUds_z4zcFYwfeW&ref=orjY4mGPRjk5boDnW0uvlrrd71vZw9kp5uQozpMtKCXbzzOhnlhWfF7uUhcat1Uf4EALzCjZrkLnf7xeJgWJt1wLjfvwjG3LrJlg8NkJa4HrOH3oGOCFVg&l10n=ru&cts=1496232648373&mc=6.99081147376

etext=1438.OlrqVc9Fa40PcMbKoQquGrK1uiWUUbpu1lDiu3UauFI.c59594ff36c63ba1e847d8952cab8c2d09b38ebb

How to get source data from this?
Thank you!

Answer 1

No way.
You are welcome!

Answer 2

What we managed to find:
https://yandex.ru/blog/metrika-club/opredelit-pois...