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