Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"manh van duc snippets" » "anh van duc snippets", "menh van duc snippets", "canh van duc snippets", "manh van duy snippets", "manh van du snippets", "manh tran duc snippets", "manh van duc slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("manh van duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("manh van duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( manh van duc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh van duc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.