XL help required

Hello,
I need a help for one of my workbook.
I have a workbook with a sheet name master and contains the below data:

Nokia LG MOTOROLA SONY HTC
DELHI 22 32 12 12 33
Mumbai 11 22 33 66 65
Guwahati 22 32 12 12 33
shimla 45 66 89 102 45
pune 47 85 92 18 11
bareilly 22 32 12 12 33

I have three more sheets in that with name shonu,mohan and raj.

Raj Data:
Nokia LG
DELHI 22 32
shimla 45 66
bareilly 22 32

Shonu data:
MOTOROLA SONY HTC
Guwahati 12 12 33
pune 92 18 11
Mumbai 12 12 33

Shonu data:
LG MOTOROLA
DELHI 32 12
shimla 66 89
bareilly 32 12

I want a formula that picks the value from sheet 1 to other three depending on the store and phone model.The formula should check store and phone model simultaneously and then display the quantity. In case i change the headers in sheet shonu to Motorola LG from Motorola LG then qty should be changed automatically.



I really need this help urgently and will be really thankful if anyone suggest me the required formula.



Thousands of thanks in Advance.


Regards
Shail