### Advanced Search: Tipitaka Category
Voice search can filter results by *Tipitaka category*. 
To search by Tipitaka category, you 
will need to use the `-tc` option in your search string. 
For example, to search Digha Nikaya and Saṃyutta Nikāya.

```
-tc:dn,sn root of suffering
```

| Abbreviation | Tipitaka Category |
| :-----: | :-----: |
| ab | Abhidhamma |
| an | Aṅguttara Nikāya |
| as | Adhikaraṇasamatha |
| ay | Aniyata |
| bi | Bhikkhuni |
| bu | Bhikkhu |
| dn | Dīgha Nikāya |
| kd | Khandhaka |
| kn | Khuddaka Nikāya |
| mn | Majjhima Nikāya |
| ms | Mahasaṅgīti Tipiṭaka |
| np | Nissaggiya Pācittiya |
| pc | Pācittiya |
| pd | Pātidesanīya |
| pj | Pārājika |
| pvr | Parivāra | 
| prv | Parivāra | 
| sk | Sekhiya |
| sn | Saṃyutta Nikāya |
| ss | Saṅghādisesa |
| su | Sutta |
| thag | Theragāthā |
| thig | Therīgāthā |
| tv | Theravāda |
| vb | Vibhaṅga |
| vin | Vinaya |