Perhaps you should try some spelling variations:
"duc hanh va snippets" » "duc thanh va snippets", "duc anh va snippets", "du hanh va snippets", "duc hang va snippets", "duc hanh vi snippets", "duc hanh va 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: (((("python using a snippets") or ("duc hanh va snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("duc hanh va snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( duc hanh va snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("duc hanh va snippets"))) or ("locating bug code snippets"))*.