Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuat tao de snippets" » "thuat bao de snippets", "thuat toan de snippets", "thuat giao de snippets", "thuat tao he snippets", "thuat nao de snippets", "thuat cao de 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: (((("thuat tao de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuat tao de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuat tao de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuat tao de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.