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