Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vao vat cach snippets" » "vao va cach snippets", "vao sat cac snippets", "vao mot cach snippets", "van vat cach snippets", "tao vat cach snippets", "va vat cach 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 vat cach 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 vat cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vao vat cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vao vat cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.