Collection Of data from different Worksheets Under specific name

Hi,
I need a Macro Which can help me to collect data from different Xl sheets in master One. That data can be Identified With Its Title i.e. Data under specific Title should be copied And pasted in master sheet. As for some sheets that data is not in a specific cells We are finding difficult to run Our macro which can copy a data from specific cells and paste it in master one. So please help me