Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat lanh so snippets" » "dat anh so snippets", "dau lanh so snippets", "hat lanh so snippets", "dat lanh co snippets", "dat lanh dao 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: (((("dat lanh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat lanh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat lanh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat lanh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.