Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat de hoan snippets" » "hat le hoang snippets", "hat duc hoan snippets", "hat ve hoang snippets", "nhat de hoan snippets", "vat de hoan snippets", "dat de hoan 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 de hoan 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 de hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat de hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat de hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.