Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cho den snippets" » "luc cao den snippets", "nuoc cho den snippets", "luat cho den snippets", "luc cho dong snippets", "luc cham den snippets", "luc chen den snippets"
"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: (((("luc cho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc cho den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cho den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.