Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan doi tre snippets" » "quan tri tre snippets", "quan li tre snippets", "quan tuoi tre snippets", "quan choi tre snippets", "quan doi tram 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 tre 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 tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan doi tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan doi tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.