Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu ran cong snippets" » "chu tran cong snippets", "chu van cong snippets", "chu ban cong snippets", "chu han cong snippets", "chu ra cong 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: (((("chu ran cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chu ran cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu ran cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu ran cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.