Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc ban ca snippets" » "duc tan ca snippets", "duc van ca snippets", "dua ban ca snippets", "duc ban cua snippets", "duc ban can snippets", "duc ban cam 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: (((("duc ban 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: (((("duc ban ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc ban ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc ban ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.