Forms :: Details On Mouse Click Using Like Operator?

I want to link to blocks using description as there is no relation , for example i have two tables with one field in common called description, and i want to link this field in two tables using like operator.

create table item ( item_code varchar2(12),item_name varchar2(30));
insert into item VALUES('A','HEA160');
insert into item VALUES('B','HEA180');
create table stk (sl_item varchar2(12),sl_desc varchar2(30),sl_qty number);
insert into stk VALUES ('X','HEA160X1000',12);
insert into stk VALUES ('X','HEA160X2000',4);
insert into stk VALUES ('Y','HEA180X3000',10);

Suppose i click on item block item_desc with value on HEA160 all the items similar to that should appear in stk block like 'HEA160X1000' ,'HEA160X2000' , if i click on 'HEA180' on item then 'HEA180X3000' it should come.