Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc benh o snippets" » "doc benh o snippets", "duong benh o snippets", "hoc benh o snippets", "duoc benh co snippets", "duoc benh xo snippets", "duoc benh do 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 benh o 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 benh o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc benh o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc benh o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.