Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi vao hon snippets" » "moi va hon snippets", "moi van hon snippets", "moi giao hon snippets", "moi cao hon snippets", "moi vao hoang snippets", "moi vao khong 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 vao hon 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 vao hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi vao hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi vao hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.