Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hat dan chap snippets" » "hat dan code snippets", "hat dan chan snippets", "hat dan thap snippets", "hat danh phap snippets", "hat van chap snippets", "mat dan chap snippets", "nhat danh chap 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: (((("hat dan chap snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat dan chap snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hat dan chap snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat dan chap snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.