Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri van hoe snippets" » "thi van hoe snippets", "tri va hoe snippets", "trinh van hoe snippets", "tri van hoa snippets", "tri van hoc snippets", "tri van hieu 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: (((("tri van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.