Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huy duong o2 snippets" » "thuy duong o2 snippets", "huy dong o2 snippets", "hai duong o2 snippets", "huy duong o snippets", "huy duong loi snippets", "huy duong oto 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: (((("huy duong o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huy duong o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huy duong o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huy duong o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.