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