Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ton du cau snippets" » "toan du cau snippets", "ton duc cau snippets", "ton cu cau snippets", "ton da cau snippets", "ton di cau 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 cau 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 cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ton du cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ton du cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.