Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan biet lon snippets" » "can biet lon snippets", "dac biet lon snippets", "dan viet lon snippets", "dan bien lon snippets", "dan biet lang snippets", "dan biet rong 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: (((("dan biet lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan biet lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan biet lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan biet lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.