Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat trong do snippets" » "viet trong do snippets", "cay trong do snippets", "dot trong do snippets", "vat trong doi snippets", "vat trong dao snippets", "vat trong co 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: (((("vat trong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vat trong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat trong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat trong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.