Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duy vinh cuu snippets" » "dung vinh cuu snippets", "quy dinh cuu snippets", "duy van cuu snippets", "duy dinh cuu snippets", "duy sinh cua snippets", "duy dinh cu 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: (((("duy vinh cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duy vinh cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duy vinh cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duy vinh cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.