Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"long va nghe snippets" » "luong va nghe snippets", "long van nghe snippets", "blong va nghe snippets", "long ve nghe snippets", "long va nghi 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: (((("long va nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("long va nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( long va nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("long va nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.