Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua vu hong snippets" » "cua vu cong snippets", "cua vu thuong snippets", "cua du phong snippets", "cua su hong snippets", "cua vi hong snippets", "cua cu hong 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: (((("cua vu hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua vu hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua vu hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua vu hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.