Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen vu cac snippets" » "chen yu cac snippets", "chen bui cac snippets", "cheng lu cac snippets", "chen va cac snippets", "chen tu cac snippets", "chen ve cac 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: (((("chen vu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chen vu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen vu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen vu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.