Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc doi do snippets" » "cuoc doi do snippets", "duoc hoi do snippets", "luoc doi do snippets", "duoc doi bo snippets", "duoc doi co snippets", "duoc doi de 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: (((("duoc doi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc doi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc doi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc doi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.