Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vinh phuc da snippets" » "hanh phuc da snippets", "vinh phu da snippets", "vinh phuc va snippets", "vinh phuc a 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: (((("vinh phuc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vinh phuc da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vinh phuc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vinh phuc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.