Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che dan hoat snippets" » "che van hoa snippets", "che dan hoc snippets", "che danh hoa snippets", "he dan hoat snippets", "chi dan hoat snippets", "che dai hoat 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: (((("che dan hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("che dan hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che dan hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che dan hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.