Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang pha du snippets" » "hang phat du snippets", "hang pham du snippets", "hang ha du snippets", "hang pham duc snippets", "hang pham duy snippets", "hang phan 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: (((("hang pha 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: (((("hang pha du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang pha du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang pha du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.