Finally after two days of hard work, I managed to solve the layout issue. Having to insert the AdMob ads in dictionary app, I need to do minor changes to the layout. This morning I realised that there should be a SPAN capability in the TableLayout (as similar to HTML table). I decided to give it a try and, Alhamdulillah it works.
What is SPAN in table? It is a capability to merge several cells in a table. If it is a column span, than it is merging several columns in a row. In this example, I managed to merge 2 cells in a row (in line 21) and and 3 cells in a row (refer to line 85 in the code below).
Column span 2
Column span 3
And this is the XML code for the layout.