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