Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan duoi ca snippets" » "quan doi ca snippets", "quan duong ca snippets", "quan nguoi ca snippets", "quan cuoi cua snippets", "quan nuoi cay 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 duoi ca 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 duoi ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan duoi ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan duoi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.