Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi tac don snippets" » "thi tam don snippets", "thi thao don snippets", "thi tran don snippets", "thi tac dong snippets", "thi cac don snippets", "thi tac den 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 tac don 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 tac don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi tac don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi tac don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.