Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc pham le snippets" » "duoc phan le snippets", "duoc pham lan snippets", "duc pham le snippets", "quoc pham le 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: (((("duoc pham le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc pham le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc pham le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc pham le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.