Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khoan hoi c snippets" » "khoan nhoi c snippets", "khoa hoi c snippets", "khoa hoc c snippets", "khoan hoi co snippets", "khoan hoi uc snippets", "khoan hoi cu snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoan hoi c snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan hoi c snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( khoan hoi c snippets ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan hoi c snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.