Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam phan co snippets" » "d phan co snippets", "va phan co snippets", "van phan co snippets", "dam phan bo snippets", "dam phan cong snippets", "dam phan cac 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: (((("dam phan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam phan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam phan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam phan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.