Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong nam cho snippets" » "dong ha cho snippets", "dong tai cho snippets", "dong va cho snippets", "dong nam chon snippets", "dong nam chi snippets", "dong nam 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: (((("dong nam cho 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 nam cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong nam cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong nam cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.