1. Learn whole phrases
This is useful for improving fluency. If you know ready-made expressions, you will not waste time choosing words and will be able to fill in awkward pauses in a conversation.
2. Use a paraphrase
It happens that words can be easily forgotten. Nothing is wrong with this: if you don’t remember a word, replace it with a descriptive expression. For example, you can’t recall the English word for “laptop”. Say, instead, a “portable computer”, a small one you can take with you, or even something freelancers always use in cafes.