Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat dan cach 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"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 code 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 code snippets")).
• Removing quotes may allow a broader search: (((( hat dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.