AC26 Update 2 introduced operators for attribute search.
Firstly. Due to issues described here - reflecting the path in the name of a folder/layer and using search is under current implementation an efficient way to manage layers. Therefore it would be very useful with "wildcard operators" for undetermined characters as it would make it quicker to limit the search to specific levels in the structure.
Eg. for a structure with A. B. C. D. as nodes followed by A10 A20 etc. searching for "?." would return A. B. C. D. and "A??" would return all nodes under A10, A20 etc. If the ability to save searches was implemented it would make it even more efficient.
Secondly. The reference documentation is not updated regarding operator and the article is not clear. It says that and/or can be used between search terms which naturally is read as that the operator AND or the operator OR can be used but it seems that only inclusive OR can be used. The syntax for the exact search operator " is also unclear. It says that it should enclose a search term but it is apparently enough to use one " to modify the search and its unclear how it handles spaces. It would be good if available operators and their syntax could be properly described in the reference documentation.