Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong han va slippers" » "cong hoan va slippers", "cong nhan va slippers", "cong khan va slippers", "cong hang va slippers", "cong hanh va slippers", "cong han va slippery", "cong han va 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 han va 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 han va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong han va slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong han va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.