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