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