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