Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dan le tuan snippets" » "dan le xuan snippets", "dan le quang snippets", "dan le thanh snippets", "ban le tuan snippets", "van le tuan snippets", "dan ve tuan snippets", "dan le 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dan le tuan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dan le tuan snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dan le tuan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.