What problem are you having exactly? Is it that your laundry is just generally not clean, or is it spots / stains?
Google the "sinners circle". You will see there are four components to cleaning anything, and in theory all should be balanced. How they balance is anyone's guess, but that's not quite the point...the point is, is that a reduction in one component means compensation is required from one or more of the other components.
For example, a quick wash in a washing machine sees a huge reduction in time, which also means it hasn't time to heat the water to a high temperature too, so will require more water (chemical on the sinners circle) and greater agitation (mechanical) to compensate.
If your washing is just generally grubby looking, this can easily be due to a build up of detergent on the fabric, if nothing else. You could try soaking the cloths in nothing but clean water before washing (warm water is ideal, but of course will cool as time progresses). You may even find a longer, hotter wash cycle with no detergent would be as good too.
But without knowing your specific issue, it's hard to advise - but please don't think it's all about the detergent, as very often it isn't.