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