Does full text search works with characters? I have successfully created an FTS index on a column where we have stored the name of medicines e.g:

Amoxicillin 250mg capsules 21 capsule
Verapamil 160mg tablets 100 tablet


When I search with the parameters  Amoxicillin  or tablets it works fine.

But when I search for '%Amoxi%' or blets it doesn't come up with the answer. However the same keywords work with Like operator.

select * from AMPP as a
WHERE Contains(A.[NM] ,'%Amoxici%')


Above query has no results . however below query returns 140 rows in result.

select * from AMPP as a
WHERE Contains(A.[NM] ,'%Amoxicillin%')

select * from AMPP as a
WHERE a.nm like '%Amoxici%'
CONTAINS and LIKE are two completely different beasts.

As it is a full text index search the wildcards (% %) become redundant. 

For your query I belive you would need to do something like:

SELECT * 
FROM AMPP AS A
WHERE CONTAINS(A.NM, '"Amoxici*"'); 


Refer to MS Books Online