Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc lam cao snippets" » "luc luan cao snippets", "duoc lam cao snippets", "luc nam cao snippets", "luc lam co snippets", "luc dam cao 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 lam cao 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 lam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc lam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc lam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.