Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vao truc cu snippets" » "vao thuc cu snippets", "cau truc cu snippets", "dao tuc cu snippets", "vao truc cau snippets", "vao truc du snippets", "vao thuc cua 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: (((("vao truc cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vao truc cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vao truc cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vao truc cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.