Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei trang do snippets" » "wei tang do snippets", "thi trang do snippets", "ke trang do snippets", "wei trang o snippets", "wei trang de 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: (((("wei trang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("wei trang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei trang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei trang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.