Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong cong du snippets" » "cong cong code snippets", "cong dong du snippets", "trong cong du snippets", "dung cong du snippets", "cong cong dau snippets", "cong cong duc snippets", "cong cong duy 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: (((("cong cong du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cong du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong cong du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cong du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.