Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong he cac snippets" » "cong he code snippets", "cong che cac snippets", "cong ha cac snippets", "cong de cac snippets", "cong nhe cac snippets", "cong ve cac snippets", "cong he bac 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 he cac 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 he cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong he cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong he cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.