Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den dan hoat snippets" » "den van hoa snippets", "den dan hoc snippets", "den danh hoa snippets", "dien dan hoat snippets", "de dan hoat snippets", "nen dan 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: (((("den 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: (((("den dan hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den dan hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den dan hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.