Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan cua che snippets" » "than cua che snippets", "tan cua che snippets", "doanh cua che snippets", "toan cuu che snippets", "toan cua chu snippets", "toan cua cha 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: (((("toan cua che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan cua che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan cua che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan cua che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.