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