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