Perhaps you should try some spelling variations:
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search)
"coder coder in database tuning" » "coder decoder in database tuning" (Expand search), "code code in database tuning" (Expand search), "decoder codec in database tuning" (Expand search), "coder coder in databases tuning" (Expand search), "coder coder _ database tuning" (Expand search), "coder code in database tuning" (Expand search), "coder codes in database tuning" (Expand search), "coder poder in database tuning" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder in database tuning") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder in database tuning\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder in database tuning ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder in database tuning") OR ("api python python python programming"))*.