Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac dan den snippets" » "khac duan den snippets", "nhac dan den snippets", "khau dan den snippets", "khac ban den snippets", "khac van den snippets", "khac dan dung 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: (((("khac dan 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: (((("khac dan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac dan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.