Fetch all words from column with like
You can use the INSTR function of MYSQL to find the starting position of the word matching your delimiter '%#aw%'. And then use sub string to fetch the word of your interest.

for eg. SELECT SUBSTR(description,INSTR (description,'#')) 
FROM photo where description like '%#aw%';

The problem here though is that if the word is followed by anything, it will also be a part of your output. You will need to find the position of the immediate next 'blank space' and use it as the LEN parameter (the 3rd param in SUBSTR function).