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