Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mai anh son snippets" » "mai thanh son snippets", "mai dinh son snippets", "mai minh son snippets", "mai anh dong snippets", "mai tinh son 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: (((("mai anh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mai anh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mai anh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mai anh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.