The best way to remember words is to practice, practice, practice. Everyday pick a new word from the dictionary and use that word throughout the day (or week). Repetition is your best friend!

I know and I will keep learning , but what I mean in this part ,actually I browse news papers pages on Facebook I think it will help me to improve my English and know new words but the issue is you already got the meaning and after a few days you may see this word in other news or report or essay but you didn't remember it's meaning

The best way to remember words is definitely to use them. Practice makes perfect haha!