Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu tu nghe snippets" » "thu xu nghe snippets", "thu su nghe snippets", "thu te nghe snippets", "thu tuc nghe snippets", "tu tu nghe snippets", "thu thuy nghe 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: (((("thu tu nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu tu nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu tu nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu tu nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.