Goodluck Jonathan said on Sunday that he had sought help from the US President Barack Obama, and also approached other world powers including Britain, France and China for help on security issues, Al Jazeera reported.
"This is a trying time for this country... it is painful," he said, and pleaded for the cooperation of parents, guardians and the local communities in the rescue efforts.
"We will get over our (security) challenge," he stated, adding that Nigerians were "justified if they expressed their anger against government" over the perceived slowness in rescuing the girls who were kidnapped from their hostel in Chibok town, in northeast Borno state, on April 14.
He assured that the "disappearance" of the girls would not be another global "mystery" in reference to the missing Malaysian passenger jet that has not been found despite the vast multi-national search deployed.
Jonathan's meeting over Saturday night was the first time the president had met with all stakeholders, including the principal of the Chibok Government Girls Secondary School in northeastern Nigeria where the girls and young women were kidnapped in a pre-dawn raid April 15, presidential adviser Reuben Abati told reporters.
Nigerians' anger at the failure to rescue the students, and protest marches last week in major Nigerian cities as well as New York City, have spurred to action Jonathan's government, which many see as uncaring of the girls' plight.
Unverified reports suggested that some of the girls were sold into marriage with their abductors for $12.
Some of the girls were taken across Nigeria's borders to Cameroon and Chad, parents said last week, quoting villagers.