Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"het nam danh snippets" » "het nam dinh snippets", "het nam dan snippets", "det nam danh snippets", "he nam danh snippets", "viet nam danh snippets", "het nam danh 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: (((("het nam danh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("het nam danh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( het nam danh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("het nam danh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.