Perhaps you should try some spelling variations:
"hieu bo ben snippets" » "hieu so ben snippets", "thieu so ben snippets", "hieu bo bien snippets", "hieu bo benh snippets", "hieu do ben snippets", "hieu bo ben 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: (((("hieu bo ben snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu bo ben snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu bo ben snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu bo ben snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.