Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi thanh do snippets" » "mot thanh do snippets", "mai thanh do snippets", "hoi thanh do snippets", "moi thanh pho snippets", "moi thanh hoa snippets", "moi thanh loi 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: (((("moi thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi thanh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi thanh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.