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