Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khe quang do snippets" » "che quang do snippets", "ke quang do snippets", "nghe quang do snippets", "khe quang d snippets", "khe quang de snippets", "khe 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: (((("khe 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: (((("khe quang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khe quang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khe quang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.