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