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