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