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