Thanks. Currently we do focus on computer science, electrical engineering and math areas. There is a lot of overlap between these fields, so it makes sense to group them.
As for other domains, we do plan to add them later, and as you point out, having portals or a good way to separate them is a good idea.
Thanks for your comment. Let me try to give you a few examples of things we do better than Scholar:
a) Navigation over the results
When you search in Scholar you get a list of papers but you cannot navigate through the details of a paper, for example, click on an author to see his/her papers. On the other hand, using Odysci, the search results have all the data linked and right there, so you can click on authors, click on the conference, click on the conference series (to see papers for a all years of a given conference).
Along the same lines, we can filter and sort the search results by relevance, date, citations, and publication type (e.g, journal, conference). Scholar does not do that.
b) Advanced Search
We have some interesting new ways to search using our operator '@'. For example, you can search for papers by a given author while he/she worked at a given place. Say, you want to search for papers published by Leslie Lamport while working at SRI: you would use as search string 'lamport@SRI'. Or search for papers published at the DAC Conference (Design Automation Conference) when it was held in San Francisco, you would search for 'venue:DAC venue@"San Francisco"'. In Scholar, the advanced search facilities are less powerful.
c) Best Papers
We collected the information related to Best Paper Awards at hundreds of conferences and we make that available through advanced search. For example, to find all the Best Papers published at DAC conferences, you would search for 'venue:DAC bp:true'. This is something unique to Odysci.
d) BibTex Generation
In Scholar you can generate Bibtex, one paper at a time. This can get very boring if you need to collect multiple references. In Odysci, you can select multiple papers, even through multiple searches, and generate BibTex for all of them in one shot.
e) Handling of accents in non-English words
Try searching for an author name with accents in Scholar. You'll see that their handling of accents during search is limited. In Odysci we handle accents seamlessly.
There are other things which we think we have an edge over Scholar but I'll stop here. Your comments are welcome.
Thanks (and I'll follow your advice and add some of these advantages to our home page).