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