Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hat danh chi snippets" » "hat danh code snippets", "nhat danh chi snippets", "han danh chi snippets", "hat dan chi snippets", "hat danh cho snippets", "hat dinh chi snippets", "hat banh chi 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 danh chi 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 danh chi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hat danh chi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat danh chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.