Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua hoi dong snippets" » "dua hop dong snippets", "dua hoat dong snippets", "dua ha dong snippets", "cua hoi dong snippets", "dua hon dong snippets", "dua moi dong 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: (((("dua hoi dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua hoi dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua hoi dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua hoi dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.