Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung dan _ slippers" » "dung dan _ slippers", "huong dan _ slippers", "trung dai _ slippers", "tung dan _ slippery", "tung dan _ grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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