Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuat cua du snippets" » "thuat sua du snippets", "thuat bua du snippets", "thuat ca du snippets", "thuat cua duc snippets", "thuat cua ndu snippets", "thuat cua su 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: (((("thuat cua 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: (((("thuat cua du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuat cua du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuat cua du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.