How can I get more water to go into my washing machine as my clothes dont g?

I have a Bosch exxcel 1400 express and my clothes dont come out clean I have tried reducing the load no success I have tried using different soaps etc Now i believe the problem is not enough water gets into the machine I know we are all trying to save the world and all that but if my clothes come out dirty I have to keep putting them through again and again so that certainly wont help the world!!!!