Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"men thi cong snippets" » "men tai cong snippets", "men thien cong snippets", "yen thi cong snippets", "tren thi cong snippets", "dien thi 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: (((("men thi 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: (((("men thi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( men thi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("men thi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.