Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong cho toa snippets" » "dung cho toa snippets", "dong co toa snippets", "dong hoc toa snippets", "dong cho hoa snippets", "dong cho tuoi snippets", "dong chi toan 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 cho toa 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 cho toa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cho toa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cho toa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.