Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei khang cu snippets" » "wei zhang cu snippets", "doi khang cu snippets", "wei tang cu snippets", "wei khung cua snippets", "wei thang cua snippets", "wei chung cu 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 khang cu 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 khang cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei khang cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei khang cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.