Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong bo cay snippets" » "cong bao cay snippets", "cong so cay snippets", "cong co cay snippets", "cong bo cau snippets", "cong bo cam snippets", "cong bo cai 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 bo cay 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 bo cay snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong bo cay snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong bo cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.