Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truc van hoe snippets" » "truc va hoe snippets", "thuc van hoe snippets", "truc ban hoe snippets", "truc van hoa snippets", "truc van hoc snippets", "truc 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: (((("truc 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: (((("truc van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truc van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.