Perhaps you should try some spelling variations:
development programming » development programme, development programmes, development programs
programming program » programmable program, program program, programs program
2.1.3 development » b2.1.3 development, 6.1.3 development, 7.1.3 development
notation 2.1.3 » notation 2.1.2, notation 12.1.1, notation 11.3

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