Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei sang che snippets" » "wei tang che snippets", "wei fang che snippets", "wei wang che snippets", "wei sang cho snippets", "wei han che snippets", "wei hang cho 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 sang che 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 sang che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei sang che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei sang che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.