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