Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi lieu den snippets" » "chi hieu den snippets", "chi tieu den snippets", "thi lieu den snippets", "chi lieu dien snippets", "chi lieu de snippets", "chi bieu dien 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: (((("chi lieu 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: (((("chi lieu den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi lieu den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi lieu den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.