Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan lieu co snippets" » "doan dieu co snippets", "dan lieu co snippets", "doanh hieu co snippets", "doan lieu so snippets", "doan lieu cong snippets", "doan lieu hoc 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: (((("doan lieu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan lieu co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan lieu co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan lieu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.