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