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