Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi cong doi snippets" » "thi cong doi snippets", "khu cong doi snippets", "phi cong doi snippets", "khi vong doi snippets", "khi cong dot snippets", "khi cong goi 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: (((("khi cong 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: (((("khi cong doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi cong doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi cong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.