In addition to the excellent, quick and intuitive https://quantifiedcantillation.nl/ mentioned above we can add two additional resources to the mix. They let one search all of Tanach for trop patterns as part of their general Tanach searches. This includes the special טעמי המקרא system for the ספרי אמ"ת.
1) The veteran מקראות גדולות הכתר application (their desktop app תכנית הכתר is much more robust than their web app but I don't think it's compatible with Windows 10) - here one can search trop patterns that include up to three words in addition to OR conditions. To search raw trop patterns here regardless of words, just assign the trop character to a single-letter wildcard (?) and surround that wildcard with an * (asterisk) wildcard before and after.
2) My own Base Hasefer (https://basehasefer.com) - it allows one to search for trop patterns of unlimited length. It allows for searching exact trop patterns as long as there's no repeating trop. There are multiple ways to accomplish trop searches:
- Simple search: A brief tutorial of this capability can be viewed (the duration of that section is about 90 seconds). While one can use the virtual keyboard popup to merely enter טעם characters separated by spaces for the searches, it is recommended to use any letter (eg. alef) as a placeholder along with the trop character to make the trop more visible. If one only wants to search by trop regardless of words, one must make sure in the settings bar that the טעמים button is selected and the אותיות\נקודות buttons are deselected in the search settings panel.
- Advanced search: this can even simulate per word OR conditions for the trop by using the Nikud/Taamaim tab to select multiple trop from the טעם dropdown. Best used if the אותיות button is the only one selected in the search settings panel.
- Pasuk settings: use this tab within the Advanced Search as a quick way to find whole pesukim based on selecting a list of trop they must contain and a list of trop they must not contain (eg. all pesukim without אתנחתא).
One final nice trop feature there is the Taam Parser which for every single pasuk in Tanach, breaks down the syntax of the words into a visual and interactive tree structure according to the rules set forth in Rav Breuer's ספר טעמי המקרא.
While the Taam Parser is very quick and intuitive, the search UI mentioned earlier can admittedly be tricky and sometimes sluggish, especially for longer trop patterns. In addition to the occasional inaccuracies, I hope to improve on all of this in the future.