Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua dieu do snippets" » "cua dieu do snippets", "qua tieu do snippets", "quan dien do snippets", "qua bieu do snippets", "qua dieu co snippets", "qua dieu d 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 dieu 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: (((("qua dieu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua dieu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua dieu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.