One thing that might help is reading; so you know more words (eg synonyms for words I you can't retrieve). You also can try to imagine how word is written and t

One thing that might help is reading; so you know more words (eg synonyms for words I you can't retrieve). You also can try to imagine how word is written and then I "read" it from visual memory - it could take longer but should do the trick. I read that that kind of problems can be connected with communication between broca and wernicke areas in brain. Good luck:)