Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den cao hoat snippets" » "den co hoat snippets", "den cao chat snippets", "den dan hoat snippets", "den cac hoat snippets", "den cam hoat snippets", "vien cao 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 cao 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 cao hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den cao hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den cao hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.