Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap li cong snippets" » "phap ly cong snippets", "phap lo cong snippets", "phap loai cong snippets", "phap bi cong snippets", "phap li song snippets", "phap lieu 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: (((("phap li 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: (((("phap li cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap li cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap li cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.