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