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