Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi manh hon snippets" » "thi hanh hon snippets", "thi minh hon snippets", "thi anh hon snippets", "thi manh ho snippets", "thi manh huong 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: (((("thi manh hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi manh hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi manh hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi manh hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.