Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc gia do snippets" » "luoc gia do snippets", "duc gia do snippets", "quoc gia do snippets", "luc gia dao snippets", "luc gia doi snippets", "luc giac do 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 gia do 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 gia do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc gia do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc gia do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.