Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"goc nam danh snippets" » "goc nam dinh snippets", "goc nam dan snippets", "ngoc nam danh snippets", "hoc nam danh snippets", "oc nam danh snippets", "goc 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: (((("goc 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: (((("goc nam danh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( goc nam danh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("goc nam danh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.