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