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