Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhe van cau snippets" » "nghe van cau snippets", "nha van cau snippets", "he van cau snippets", "nhe van dau snippets", "nhe van hau snippets", "nhe van chat 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: (((("nhe van 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: (((("nhe van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhe van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhe van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.