Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap ngu do snippets" » "nhat ngu do snippets", "han ngu do snippets", "phap tu do snippets", "phap ngu dao snippets", "phap ngu so snippets", "phap ngu co 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: (((("phap ngu 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: (((("phap ngu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap ngu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap ngu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.