Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung phu a7 slippers" » "dung phan a7 slippers", "dung cho a7 slippers", "dung he a7 slippers", "dung phu a7 slippery", "dung phu a7 grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung phu a7 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phu a7 slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phu a7 slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phu a7 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.