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