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