Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do danh nghe snippets" » "do anh nghe snippets", "do dang nghe snippets", "do hanh nghe snippets", "do dinh nghe snippets", "do sanh nghe snippets", "dia danh 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: (((("do danh 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: (((("do danh nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do danh nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do danh nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.