Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"deu van hieu snippets" » "deu cao hieu snippets", "dieu van hieu snippets", "de van hieu snippets", "hieu van hieu snippets", "deu van hieu slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("deu van hieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("deu van hieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( deu van hieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("deu van hieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.