Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hung te cong snippets" » "hung tu cong snippets", "cung te cong snippets", "dung te cong snippets", "hung tai cong snippets", "hung thi cong snippets", "hung thu cong 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: (((("hung te cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hung te cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung te cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung te cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.