Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bug code slippers", "locating bugs code snippets"
"python using java snippets" » "python using data snippets"
"do phan duc snippets" » "do pham duc snippets", "do phan tu snippets", "do phan dau snippets", "doc phan duc snippets", "co phan duc snippets", "d phan duc 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 ("do phan duc snippets"))) or ("locating bugs code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("do phan duc snippets"))) OR ("locating bugs code slippers")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( do phan duc snippets ))) or ( locating bugs code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("do phan duc snippets"))) or ("locating bugs code slippers"))*.