Yes, you can search files by multiple tags just by provided multiple tags in the search query like #tag1 #tag2.
And you can also share tagged files/folders between two PCs through dropbox or shared drive or any cloud system.
Just install Dropbox on your Windows PC so that it creates a virtual drive on your system. Now tag files/folders on this virtual drive using Filezo . On the other PC, do the same and install Filezo . All your tags and information about tagged files/folders will be restored back.
Tags in Filezo are saved as part of NTFS file system. So if you simply copy files/folders from one NTFS drive to another NTFS drive directly then all the tags will be retained. After copying, just install Filezo and it will restore all the tags back even if you have copied on another drive on inside another folder.
If you have your tagged files on a file system such as FAT32 also, you can simply copy everything as it is to another computer. Filezo will restore all the tags back. On Non-NTFS file syste, Filezo stores the tags differently. But they are still restorable.
The less recommended option is that after you have transferred your files and folders to another system, you copy Filezo 's data file also to another PC/laptop. But in this case, you must ensure that the folder structure and drive letters are exactly same as the previous system.
To know where Filezo stores its data, go to Settings in Filezo and click on the Advanced tab.