Hi guys, finally it works!
I needed to change this:
melm 710        Author,Corporate-name
#melm 710$t     author,Author-title,Name-and-title,Title,Title-uniform
melm 710$t      Author-title,Name-and-title,Title,Title-uniform


#melm 710$a     author,author:p,Name-and-title

melm 710$a      Name-and-title
melm 710$9      Koha-Auth-Number
#melm 710       author,Name
melm 710        Author,Name

to this .

melm 710$t      Author-title,Name-and-title,Title,Title-uniform


melm 710$a      Name-and-title
melm 710$9      Koha-Auth-Number
melm 710        Author,Corporate-name

in /etc/koha/zebradb/marc_defs/marc21/biblios/records.abs

But, now i have another problem =(

I have this authority (for example)

Authority #1786 (Autor Personal)

Used in 0 records

001 - CONTROL NUMBER
@ control field 1786
003 - CONTROL NUMBER IDENTIFIER
@ control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
@ control field 20090618102930.0
008 - FIXED-LENGTH DATA ELEMENTS
@ fixed length control field 090618|| aca||aabn | a|a d
040 ## - CATALOGING SOURCE
a Original cataloging agency OSt
100 ## - HEADING--PERSONAL NAME
a Personal name Venero Baldeon, J. Armando
400 ## - SEE FROM TRACING--PERSONAL NAME
a Personal name Venecio, Armando venecilourdes venectonto


And, in authority search ("Browse by Subject") when i put "venero" on Personal name, Main Entry, it works and return this:

Authority search results

Results 1 to 2 of 2
Authorized Headings Type of Heading Biblio records Full Heading
Venero Baldeon, J. Armando
      used for/see from: Venecio, Armando venecilourdes venectonto
0 biblios View Full Heading
Venero de Lutgardo, R. Isabel
7 biblios View Full Heading

It's ok, but.. when i put "venero" on Personal name, Anywhere it doesn't work. No results found =(

I think "Anywhere" is not working for anything =/. ¿Its a bug?

So, I need that when a user enters "Venecio" or "Armando" or "venecilourdes" or "venectonto" in "Anywhere", the author found 1786 and others. (Bone, also index fields 400 and others). Any ideas? =/