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