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