Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan soi cong snippets" » "tan so cong snippets", "tan noi cong snippets", "tan moi cong snippets", "tan hoi cong snippets", "tan son cong snippets", "tan voi cong 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: (((("tan soi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan soi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan soi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan soi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.