Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai dan xe snippets" » "hai dang xe snippets", "hoi dan xe snippets", "hai tan xe snippets", "hai dan ve snippets", "hai dan de snippets", "hai dan he 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: (((("hai dan xe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai dan xe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai dan xe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai dan xe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.