Search Function Limitation

Search Function Limitation

Hi there,

I am having problems with search function within sales order and puchase order etc. Firstly can this be customised:

The issues that i facing are:
- when i search for a product within sales or purchase order, it either bring back all product or none.
- even i have seletec a vendor it brings back all the vendor products.
- it only lets search by product name and doesnt allow multiple field search
- it shows by 10 per view when showing all, can this be changed to 50.
- Also can multiple field option be entered for filtering a product by catepory, vendor, etc.