Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang son di snippets" » "hoang van di snippets", "lang son di snippets", "giang son di snippets", "hoang son d snippets", "hoang son da snippets", "hoang son ki 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: (((("python using java snippets") or ("hoang son di snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hoang son di snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hoang son di snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hoang son di snippets"))) or ("locating bug code snippets"))*.