Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi tra du snippets" » "hoi trac du snippets", "hoi tri du snippets", "hoi thao du snippets", "hoi tra tu snippets", "hoi tran duc snippets", "hoi tran duy 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: (((("hoi tra du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi tra du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi tra du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi tra du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.