Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao cong cac snippets" » "hao cong code snippets", "cao cong cac snippets", "vao cong cac snippets", "ha cong cac snippets", "hao cuong cac snippets", "hao cong tac snippets", "hao cong cau 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: (((("hao cong 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: (((("hao cong cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao cong cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao cong cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.