Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang que toi snippets" » "lang que toi snippets", "dang quoc toi snippets", "lang quen toi snippets", "dang que tai snippets", "dang quen voi snippets", "dang quen tot 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: (((("dang que toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang que toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang que toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang que toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.