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