Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan minh he snippets" » "pham minh he snippets", "phan dinh he snippets", "phan kinh he snippets", "phan minh hue snippets", "phan hinh he snippets", "phan minh ve 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan minh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan minh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.