Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong san ton snippets" » "cong san ton snippets", "dong bang ton snippets", "dong von ton snippets", "dong san ten snippets", "dong han tong snippets", "dong van toan 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: (((("dong san ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong san ton snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong san ton snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong san ton snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.