Why doesn't Sphinx find the original word?

Question

Sphinx

There are two entries:
* Evening Quarter is 10 years old
* Evening Quarter
If I search for the word "quarter", it finds both records, but only one for the word "quarter". What is the problem ?
config

charset_type = utf-8
morphology = stem_enru
min_word_len = 3
index_exact_words = 1
enable_star = 1
expand_keywords = 1	
min_prefix_len = 3
html_strip = 1

Answer 1

See show meta right after the request. There you will see exactly what entities the sphinx was looking for.
(perhaps, the "quarter" was not mastered by morphology, for example).

Answer 2

Look at a log of a sphinx, and so should search.