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