Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hoan so snippets" » "duc hoang so snippets", "duc hoa so snippets", "duc toan so snippets", "duc khoan so snippets", "duc hon so snippets", "duc hoang son 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: (((("python using java snippets") or ("duc hoan so snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("duc hoan so snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duc hoan so snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duc hoan so snippets"))) or ("locating bug code snippets"))*.