Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban quang do snippets" » "ban quan do snippets", "van quang do snippets", "dan quang do snippets", "ban quang d snippets", "ban quang de snippets", "ban quang dong 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: (((("ban quang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban quang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban quang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban quang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.