Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha len cong snippets" » "pha den cong snippets", "pha le cong snippets", "pha len con snippets", "phap lenh cong snippets", "pham lien cong snippets", "pham lan 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: (((("pha len 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: (((("pha len cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha len cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha len cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.