Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong su cho snippets" » "dang su cho snippets", "dong tu cho snippets", "dong luc cho snippets", "dong su choi snippets", "dong su co snippets", "dong cu cho 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 su cho 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 su cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong su cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong su cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.