Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi can loi snippets" » "khoa can loi snippets", "khoi nang loi snippets", "hoc can loi snippets", "khoi van loi snippets", "khoi can moi snippets", "khoi hang loi 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: (((("khoi can loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi can loi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can loi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.