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