Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dun va cau snippets" » "dung va cau snippets", "dan va cau snippets", "don va cau snippets", "dun van cau snippets", "dun va cac snippets", "dun va dau 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: (((("dun va cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun va cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun va cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun va cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.