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