Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu hoc chieu snippets" » "tu hoc thieu snippets", "tu ho chieu snippets", "tu hoc hien snippets", "te hoc chieu 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: (((("tu hoc chieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu hoc chieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu hoc chieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu hoc chieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.