Asset related issues can be searched via the "Assets" custom field or by handy AIP JQL functions.
Searching via custom field
Searching via custom field is as simple as any field in JIRA. In issue navigator, type custom field name (by default it is Assets) and use generic text search. Text search is not case sensitive.
Assets ~ Laptop
|Asets name like Laptop. Laptop2, MyLaptop or MyLaptop2 matches|
|Assets ~ 'My Laptop'||You must enclose spaces or special characters in a string|
|Assets is not EMPTY||Issues with Asset custom field has a value|
|Assets ~ '#55'||Searches for Asset ID|
As of now, there are three JQL functions bundled with Assets and Inventory Plugin.
Here are some samples