Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dun moi cong snippets" » "dun noi cong snippets", "dun voi cong snippets", "dun tai cong snippets", "dung moi cong snippets", "dua moi cong snippets", "dinh moi cong 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: (((("dun moi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun moi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun moi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun moi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.