Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao minh le snippets" » "chi minh le snippets", "van minh le snippets", "cao dinh le snippets", "cao manh le snippets", "cao minh ve 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: (((("cao minh 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: (((("cao minh le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao minh le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao minh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.