Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"manh hon do snippets" » "manh ho do snippets", "minh hon do snippets", "manh huong do snippets", "manh hon don snippets", "manh hon so snippets", "manh hon bo 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: (((("manh hon do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("manh hon do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( manh hon do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh hon do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.