Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong mot doi snippets" » "dung mot doi snippets", "dong mon doi snippets", "cong mot doi snippets", "dong moi doi snippets", "dong hoat doi snippets", "dong mong doi 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 mot doi 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 mot doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong mot doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong mot doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.