Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu van hon snippets" » "hieu va hon snippets", "thien van hon snippets", "lieu va hon snippets", "hieu van hoan snippets", "hieu van hong snippets", "hieu van hoa 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: (((("hieu van 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: (((("hieu van hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu van hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu van hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.