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