Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat theo chu snippets" » "nhat theo chu snippets", "dat theo chu snippets", "hat cheo chu snippets", "hat theo chieu snippets", "hat cho chu snippets", "hat chao chu 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: (((("hat theo chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat theo chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat theo chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat theo chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.