Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hat dan cach snippets" » "hat dan code snippets", "hat dan cac snippets", "hat dan canh snippets", "hat nhan cach snippets", "hat van cach snippets", "mat dan cach snippets", "nhat danh cach 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 cach 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 cach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hat dan cach snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat dan cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.