You can use Phrase Slop in the dismax query parser, it scores documents with query terms in proximity higher than others.

https://github.com/docker/machine/issues/3023 might help.

You can use Search Boost to show relevant results first.https://experienceleague.adobe.com/docs/experience-manager-learn/assets/search-and-discovery/search-boost.html?lang=en 

https://experienceleague.adobe.com/docs/experience-manager-learn/cloud-service/debugging/debugging-aem-as-a-cloud-service/developer-console.html?lang=en will help.

The 1.X.X versions of PDF Tools SDK will reach End of Life in May 2022. Once a version reaches its end of life, the functionality may be deprecated and stop working.Refer: https://developer.adobe.com/document-services/docs/overview/pdf-services-api/releasenotes/

Moving the asset to a new folder structure using the Move operation in DAM will also allow you to update the reference (i.e., pages).Once you finish the Move operation, test the corresponding page and then Publish the new Asset path and the Page. 

Can you check if the file exists here:/content/dam/my-project/folder/audio/file.mp3 Also, see if the below URL is blocked in AEM as Cloud Publish: https://publish-pXXXX-XXX.adobeaemcloud.com/content/dam/my-project/folder/audio/file.mp3 

Can you check in command prompt version of Java by running this command : java -version? Also, validate storage space is more than 5GB and RAM more than 2GB.   

Make sure you have Java 11 for AEM 6.5 & AEM cloud SDK and Java 8 for lower version of AEM.

Replicate means Publish (activate) content from an Author to a Publish environment