Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den san chi snippets" » "dem san chi snippets", "den son chi snippets", "nen san chi snippets", "den van chi snippets", "den luan chi snippets", "den toan chi 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 san chi 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 san chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den san chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den san chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.