Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan canh do snippets" » "xuan chanh do snippets", "xuan anh do snippets", "xuan can do snippets", "xuan lanh dao snippets", "xuan thanh do snippets", "xuan canh dan 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: (((("xuan canh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan canh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan canh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan canh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.