xeel,
When you working with an html file, you can use ctrl + space to bring up the list. And you need to keep one thing in mind … when you press ctrl + space, only the valid html tags that can be placed at that location will so up. So if your in the <body> tag and you want to add a table, when you hit ctrl + space only the <table> tag will show up (along with some other tags) but the <tr> and <td> tags will not show up. Once you have place the <table> tag and then hit ctrl + space in a <table> tag, the <tr> tag will show up in the drop down.
I hope I didn’t confuse. Let me know if you need any further clarifications.