Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han gao can snippets" » "zhan gao can snippets", "hat gao can snippets", "than giao can snippets", "han gao san snippets", "han mao can snippets", "han rao can 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: (((("han gao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han gao can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han gao can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han gao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.