Here is the incorrect behavior that I observe in v1.6.08: If the first word of a concept description appears anywhere in your search phrase, it MUST be the first word in your search phrase, unless that word is repeated in the concept description.

For example, here is a table that illustrates the results of a two-word search that tries to match on "American Flag Or Touch Football":

{noformat}
         | American | Flag | Or | Touch | Football
---------+----------+------+----+-------+----------
American | 0 | 1 | 1 | 1 | 1
Flag | 0 | 0 | 1 | 1 | 1
Or | 0 | 1 | 0 | 1 | 1
Touch | 0 | 1 | 1 | 0 | 1
Football | 0 | 1 | 1 | 1 | 0
{noformat}

1 = match
0 = failed to match
Rows correspond to first word of the search phrase, and the columns correspond to the second.

The failures to match in column 1, rows 2-4 are unexpected behavior. For example, the unquoted search phrase "Flag American" should match the concept "American Flag or Touch Football" in a "containing"-style search, so the value of row 2, col 1 should be "1".