Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cas hai long snippets" » "cas hai phong snippets", "cas hai duong snippets", "can hai long snippets", "cau hai long snippets", "chan hai long 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: (((("cas hai long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cas hai long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cas hai long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cas hai long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.