Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong gi he snippets" » "dong goi he snippets", "dong bi he snippets", "dong qi he snippets", "dong gi de snippets", "dong gi ve snippets", "dong vi he 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: (((("dong gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong gi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong gi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.