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