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