Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung bieu do snippets" » "dung hieu do snippets", "dung tieu do snippets", "hung bien do snippets", "dung bien do snippets", "dung bieu o snippets", "dung bien doi 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: (((("dung bieu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung bieu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung bieu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung bieu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.