Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu san nghe snippets" » "phu van nghe snippets", "phu can nghe snippets", "phu lang nghe snippets", "phi san nghe snippets", "thuy san nghe 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: (((("phu san nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phu san nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu san nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu san nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.