Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"heo xanh du snippets" » "heo anh du snippets", "heo danh du snippets", "heo xanh di snippets", "theo xanh du snippets", "cheo xanh du 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: (((("heo xanh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("heo xanh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( heo xanh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("heo xanh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.