Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc dao hoi snippets" » "duc dao hoi snippets", "doc dao hoi snippets", "duoc dai hoi snippets", "duoc dao thoi snippets", "duoc dao ho 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 dao hoi 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 dao hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc dao hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc dao hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.