Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat hieu nom snippets" » "dao hieu nom snippets", "dat tieu nom snippets", "rat nhieu nom snippets", "dat hieu kem snippets", "dat hieu so snippets", "dat hieu bo 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 hieu nom 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 hieu nom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat hieu nom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat hieu nom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.