Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ba chuong cu snippets" » "va chuong cu snippets", "van chuong cu snippets", "ban phuong cu snippets", "ba chung cu snippets", "ba chuong chua snippets", "ba cong cu 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: (((("ba chuong cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ba chuong cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ba chuong cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ba chuong cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.