Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong phan du snippets" » "dung phan du snippets", "cong phan du snippets", "dong chan du snippets", "dong phan dau snippets", "dong phan duc snippets", "dong phan dua 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 phan du 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 phan du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong phan du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong phan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.