Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat dua doan snippets" » "hat du doan snippets", "hat quan doan snippets", "hat cua doanh snippets", "hat cua doan snippets", "hat dum doan snippets", "chat cua doan 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: (((("hat dua doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat dua doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat dua doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat dua doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.