Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua duc moi snippets" » "cua tuc moi snippets", "cua nuoc moi snippets", "cua quoc moi snippets", "cua duoc moi snippets", "cua duc loi snippets", "cua duc mo 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 duc 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 duc moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua duc moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua duc moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.