Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong han cho snippets" » "cong han code snippets", "cong hoan cho snippets", "cong nhan cho snippets", "cong khan cho snippets", "cong hang cho snippets", "cong han che snippets", "cong san cho 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 han cho 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 han cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong han cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong han cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.