Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan doi ke snippets" » "quan tri ke snippets", "quan li ke snippets", "quan do ke snippets", "quan moi ke snippets", "quan doi de 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: (((("quan doi ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan doi ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan doi ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan doi ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.