Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua vu moi snippets" » "cua su moi snippets", "cua vi moi snippets", "cua cu moi snippets", "cua vua moi snippets", "cua ve moi snippets", "cua va moi 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 moi 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 moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua vu moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua vu moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.