Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"het anh son snippets" » "viet anh son snippets", "nhat anh son snippets", "test anh son snippets", "het anh dong snippets", "het 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: (((("het 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: (((("het anh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( het anh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("het anh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.