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