Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu dong son snippets" » "huy dong son snippets", "luu dong son snippets", "huu dung son snippets", "huu dong von snippets", "huu dong san snippets", "huu hoang 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: (((("huu dong 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: (((("huu dong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu dong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu dong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.