The Sanskrit words must be spelled exactly according to the the transliteration system, Harvard-Kyoto or Itrans. In the index pane, links to pop-up guides to both are provided.
Easiest perhaps is the itrans-based dictionary. You can specify a part of the word (say "bhaara"). It will generate all words starting with "bhaara", including "bhaarata". Do not use quotes ("").
For Capeller's and Cologne, use reset button when needed to clear the from. Only one of the two inputs (Skt>Eng or Eng>Skt) should be filled, otherwise a look-up for both will occur.
Please email me any feedback.