Yes, you can—just select the appropriate options in the search settings. The characters “-” and “=” are treated as equivalent.
Diacritics can be ignored in queries. When this option is selected, all dictionary entries will be found where, for example, in the query х̌ӯвд, the character ӯ may match ӯ, у̊, or у, and х̌ may match ӽ, х̌, or х.