Search terms that are separate words should match text separately

[louh]

No description provided.

[louh]

For instance, searching "space research" should match Census functionality which returns:

541712  Guided missile and space vehicle parts (except engines) research and development

[louh]

In order for this to work, a term like "space research" should only match within each index entry. Otherwise an entire code gets returned if either "space" or "research" matches any of the index entries, which is less useful.