Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi tap cong snippets" » "phi tmcp cong snippets", "phi cac cong snippets", "phi tap co snippets", "phi thap cong snippets", "pha tap cong snippets", "phi tai 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: (((("phi tap 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: (((("phi tap cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi tap cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi tap cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.