Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"peng su hoan snippets" » "leng su hoan snippets", "peng shi hoan snippets", "phong su hoan snippets", "peng su han snippets", "peng vu hoan snippets", "peng thu hoan 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: (((("peng su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("peng su hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( peng su hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("peng su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.