Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che hai long snippets" » "che hai phong snippets", "che hai duong snippets", "che dai long snippets", "che tai long snippets", "cho 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: (((("che 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: (((("che hai long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che hai long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che hai long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.