Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro hai long snippets" » "tro hai phong snippets", "tro hai duong snippets", "tra hai long snippets", "tri hai long snippets", "tro ha long 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: (((("tro hai long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tro hai long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro hai long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro hai long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.