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