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