Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong nha can snippets" » "cong nhan can snippets", "cong nhat can snippets", "cong ha can snippets", "cong nha cao snippets", "cong nha van snippets", "cong nha san 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 nha can 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 nha can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong nha can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong nha can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.