Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc huu du snippets" » "ngoc hue du snippets", "ngoc hung du snippets", "ngoc chau du snippets", "ngoc huu duc snippets", "ngoc hut du snippets", "ngoc cuu du 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: (((("ngoc huu 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: (((("ngoc huu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc huu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc huu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.