Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"tu yu zhang snippets" » "tu you zhang snippets", "tu yu hang snippets", "tu yuan zhang snippets", "tu tu zhang snippets", "tu vu zhang snippets", "tu y zhang snippets", "tu yu zhang 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: "((((\"tu yu zhang snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( tu yu zhang snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tu yu zhang snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.