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