Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bao tao voi snippets" » "dao tao voi snippets", "bao cao voi snippets", "bao tay voi snippets", "bao tao boi snippets", "bao tao hoi snippets", "bao dao voi 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: (((("bao tao voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bao tao voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bao tao voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bao tao voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.