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