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