Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap van cay snippets" » "pham van cay snippets", "phan van cay snippets", "phap han cay snippets", "phap van cau snippets", "phap van bay snippets", "phap van ca 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: (((("phap van cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap van cay snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap van cay snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap van cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.