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