Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan minh de snippets" » "pham minh de snippets", "phan dinh de snippets", "phan kinh de snippets", "phan minh ve snippets", "phan sinh de snippets", "phan menh de 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: (((("phan minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan minh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan minh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.