Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong nong du snippets" » "cong dong du snippets", "cong cong du snippets", "cong trong du snippets", "cong nang du snippets", "cong mong du snippets", "cong nong do 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: (((("cong nong 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: (((("cong nong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong nong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong nong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.