Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vung tau lon snippets" » "dung tai lon snippets", "vung dat lon snippets", "vung va lon snippets", "vung tap lon snippets", "vung cau long snippets", "vung thu loan 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: (((("vung tau lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vung tau lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vung tau lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vung tau lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.