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