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