Using vlookup to find a string from text and return a label

Book1.xlsBook1.xlsHi,
Am a newbie here. I am looking for a VLOOKUP solution for the following problem:

i have a column (A) which has text
ROW---------column A
1------------ATW AARPRE SENS2342
2------------ECS DR SUNDMF 20112011 CAMS-2016642325
3------------ECS DR TP DSPBRMF-2164359526
4------------ECS DR IILECS - HDFC MF-2164501726
5------------ATW-5264190205285926 -SAHAR PLAZA
6------------CC 5243XXXXXXXX6511 autopay SI-TAD
7------------MSTSal Nov 2011

I want to lookup the following table - using the first 3 letters and also (in some cases another string) from column A and return the label in column H
Column G Column H
1---ATW--------------CASH WITHDRAWAL
2---ECS SUND---------MF SUND FUND
3---ECS DSP-----------MF DSP FUND
4---ECS HDFC---------MF HDFC FUND
5---CC 6511-----------CREDIT CARD 6511
6---SAL---------------SALARY

so that i get the following result
column A----------------------------------------------------Column B
ATW AARPRE SENS2342-------------------------------------------CASH WITHDRAWAL
ECS DR SUNDMF 20112011 CAMS-2016642325-----------------MF SUND FUND
ECS DR TP DSPBRMF-2164359526-------------------------------MF DSP FUND
ECS DR IILECS - HDFC MF-2164501726------------------------- MF HDFC FUND
ATW-5264190205285926 -SAHAR PLAZA-------------------------CASH WITHDRAWAL
CC 5243XXXXXXXX6511 autopay SI-TAD-------------------------CREDIT CARD 6511
MST Sal Nov 2011--------------------------------------------------SALARY


As you can see i have a text string in A1:A7 and i want excel to return a label to column B1:B7.
The labels depend on the one or two text strings that must be found in column A. The required text strings are shown in a table G1:H6
So i need a vlookup function that searches one or two text strings and then looks up the table and returns the label required.
The text string may be 3 alphabets alone, or the 3 plus another string somewhere in the middle

Any help will be appreciated. I am attaching a sample excel file
Thanks