Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan hoc su slippers" » "nha hoc su slippers", "nhan hoa su slippers", "than hoc su slippers", "nhan hoc su slippery", "nhan hoc su 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: (((("nhan hoc su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan hoc su slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan hoc su slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan hoc su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.