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