Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong xa trac slippers" » "cong xay trac slippers", "cong xua trac slippers", "cong ha trac slippers", "cong va trac slippers", "cong tap trac slippers", "cong gia trac slippers", "cong xa trac slippery", "cong xa trac 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: (((("cong xa trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong xa trac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong xa trac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong xa trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.