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