Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham cua con snippets" » "pham ca con snippets", "phat cua con snippets", "ham cua con snippets", "pham cua cong snippets", "pham cua co snippets", "pham cua can 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: (((("pham cua con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham cua con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham cua con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham cua con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.