Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei phan gom snippets" » "wei pan gom snippets", "wei zhang gom snippets", "tai phan gom snippets", "wei phan ngoc snippets", "wei phan mem snippets", "wei phan bo 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 phan gom 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 phan gom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei phan gom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei phan gom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.