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