Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sat voi nghe snippets" » "sat noi nghe snippets", "sat gioi nghe snippets", "sat van nghe snippets", "sat hoi 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: (((("sat voi 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: (((("sat voi nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sat voi nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sat voi nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.