Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cai tri cong snippets" » "cai tai cong snippets", "cai thi cong snippets", "cai trien cong snippets", "bai tri cong snippets", "giai tri cong 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: (((("cai tri cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cai tri cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cai tri cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cai tri cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.