Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan quoc hoc snippets" » "dang quoc hoc snippets", "han quoc hoc snippets", "tran quoc hoc snippets", "dan quoc hoi snippets", "dan duoc hoc snippets", "dan buoc hoc 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 quoc hoc 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 quoc hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan quoc hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan quoc hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.