Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nga den cac snippets" » "nga dien cac snippets", "nga dan cac snippets", "nga de cac snippets", "ngan den cac snippets", "ngay den cac 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: (((("nga den cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nga den cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nga den cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nga den cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.