Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nen dang co snippets" » "nen tang co snippets", "nen dan co snippets", "nhan dang co snippets", "nen dong co snippets", "nen dung co snippets", "nen dang do 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 dang 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 dang co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen dang co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen dang co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.