why is this mysql query not working on the server - php

Question

this code tested with both server and local phpmyadmin
on localhost it returned results as expected
on server it returned a good result but when passing the dr_name it returns empty result
here is the code:
SELECT * FROM doctor WHERE dr_name LIKE '%غا%' AND specialization=12 AND state=6
the only deference between server and local is that the server mysql engine is myisam and innodb on localhost
this is the create table statement:
CREATE TABLE IF NOT EXISTS `doctor` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`dr_name` varchar(65) NOT NULL,
`dr_name_e` varchar(65) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`unique_name` varchar(75) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`pass` char(40) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`nickname` varchar(100) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT NULL,
`specialization` int(11) NOT NULL,
`state` tinyint(4) NOT NULL,
`scientific_degree` int(11) DEFAULT NULL,
`university` int(11) DEFAULT NULL,
`grad_year` smallint(6) DEFAULT NULL,
`show_degree` tinyint(1) DEFAULT NULL,
`show_univ` tinyint(1) DEFAULT NULL,
`show_grad_year` tinyint(1) DEFAULT NULL,
`appendices` varchar(1000) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT NULL,
`picture` varchar(255) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT NULL,
`active` tinyint(1) NOT NULL DEFAULT '0',
`views` bigint(20) DEFAULT '0',
`search_result` bigint(20) DEFAULT '0',
`gender_male` tinyint(1) DEFAULT NULL,
`agent` int(11) DEFAULT NULL,
`next_step` tinyint(4) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `unique_name` (`unique_name`),
KEY `university` (`university`),
KEY `scientific_degree` (`scientific_degree`),
KEY `specialization` (`specialization`),
KEY `agent` (`agent`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=31 ;