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