Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa van moi snippets" » "hoa dan moi snippets", "hoang van moi snippets", "hoa phan moi snippets", "hoa van muoi snippets", "hoa van loi snippets", "hoa ban moi 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: (((("hoa van moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoa van moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa van moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa van moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.