Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac danh co snippets" » "khao danh co snippets", "khac manh co snippets", "khac khanh co snippets", "khac danh cho snippets", "khac doanh co snippets", "khac anh co 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: (((("khac danh 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: (((("khac danh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac danh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac danh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.