Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tieu tu doi snippets" » "tieu thu doi snippets", "tieu su doi snippets", "lieu tu doi snippets", "tieu tu do snippets", "tieu te doi snippets", "tieu tu di 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: (((("tieu tu 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: (((("tieu tu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tieu tu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tieu tu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.