Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"php cap nghe snippets" » "php van nghe snippets", "php nam nghe snippets", "php day nghe snippets", "pho cap nghe snippets", "phap cac nghe snippets", "phap cai nghe 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: (((("php cap nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("php cap nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( php cap nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("php cap nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.