Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach tinh du snippets" » "mach tich du snippets", "manh tinh du snippets", "trach tinh du snippets", "mach tinh duc snippets", "mach tinh 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: (((("mach tinh 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: (((("mach tinh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach tinh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach tinh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.