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