Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi can coi snippets" » "khoa can coi snippets", "khoi nang coi snippets", "hoc can coi snippets", "khoi can chi snippets", "khoi can moi snippets", "khoi con coi 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 coi 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 coi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can coi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can coi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.