Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi voi chu snippets" » "doi voi chu snippets", "moi doi chu snippets", "moi thoi chu snippets", "moi hoi chu snippets", "moi toi chu snippets", "moi voi phu 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: (((("moi voi 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: (((("moi voi chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi voi chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi voi chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.