Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham vu trac slippers" » "pham tu trac slippers", "pham va trac slippers", "pham vi trac slippers", "pham vu trac slippery", "pham vu trac 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: (((("pham vu trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham vu trac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham vu trac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham vu trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.