Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cau tong son snippets" » "cau trong son snippets", "cau cong son snippets", "cuu tong son snippets", "cau dong son snippets", "cau hong son snippets", "cau tang son 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: (((("cau tong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cau tong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau tong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau tong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.