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