PL/SQL :: Nested For Loop In The Collections

collection1

============

SELECT o.object_id     
BULK COLLECT INTO l_obj_info       
FROM (SELECT     n.node_id, n.object_id                   
FROM nodes n             
START WITH n.node_id = 100             
CONNECT BY PRIOR n.node_id = n.parent_node_id) n            
INNER JOIN             objects o ON n.object_id = o.object_id      
WHERE o.object_type_id = 285;       

collection2

============

SELECT *     
BULK COLLECT INTO l_tab       
FROM ((SELECT     REGEXP_SUBSTR (i_l_text, '[^,]+', 1, LEVEL)                    
FROM DUAL              
CONNECT BY REGEXP_SUBSTR (i_l_text, '[^,]+', 1, LEVEL) IS NOT NULL));  
END;  

collection3

============ 

SELECT o.object_id              
BULK COLLECT INTO l_fin_tab                
FROM objects o JOIN ATTRIBUTES att ON o.object_id = att.object_id               
WHERE o.object_id = collection1.object_id                 
AND att.VALUE = collection2.val;                 

how to implement for loop in the collection3 to get the values from collection1 and collection2. i have tried in the below way 

CREATE OR REPLACE TYPE LIST_OF_ATTRIBUTES_TYPE AS TABLE OF varchar2(4000);/ 
CREATE OR REPLACE TYPE LIST_OF_OBJECT_IDS_TYPE AS TABLE OF number(9);/  
CREATE OR REPLACE FUNCTION f_get_objects_by_type_id (   i_object_type_id   IN   NUMBER,   i_l_text           IN   VARCHAR2,   i_scope_node_id         NUMBER)  

[Code]....