Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son te cong snippets" » "son tai cong snippets", "son thi cong snippets", "son thu cong snippets", "son le cong snippets", "son tp cong snippets", "son ve 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: (((("son te 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: (((("son te cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son te cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son te cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.