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