Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh du hoc snippets" » "trinh duc hoc snippets", "trinh dau hoc snippets", "trinh duy hoc snippets", "trinh tu hoc snippets", "trinh 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: (((("trinh 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: (((("trinh du hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh du hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh du hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.