Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi hoc dan slippers" » "cho hoc dan slippers", "chi hoa dan slippers", "chi loc dan slippers", "chi hoc dan slippery", "chi hoc 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: (((("chi hoc 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: (((("chi hoc dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi hoc dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi hoc dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.