Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc bien da snippets" » "duoc dien da snippets", "duc bien da snippets", "duoc thien da snippets", "duoc bien dai snippets", "duoc bien dao snippets", "duoc vien da 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: (((("duoc bien da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc bien da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc bien da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc bien da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.